When HBO launched in the 1970s, it primarily broadcasted theatrical films and sporting events during select hours. It was only available in certain areas of the United States and around New York City, where it was based. In 1975, the network began broadcasting in every state, which significantly increased its visibility. It wasn't until Warner Media acquired HBO that its ambitious original programming began. In the present, that is what HBO is best known for.

With award-winning original shows like Game of Thrones, The Wire, and The Sopranos, they are one of the top-tier streaming services out there. As it doesn't rely on traditional funding through advertising, HBO is able to portray more controversial and explicit subjects. This meant they could provide programming unlike that of any other network, particularly before the age of streaming services. HBO's own streaming platform Max has been producing even more shows. As a result of this, there are many HBO programs that are flying under the radar and not finding their audience.

Related: The 10 Best HBO Original Comedy Series

Updated on August 5th, 2023 by Federico Furzan: This article has been updated with additional content to keep the discussion fresh and relevant with even more information and new entries.

20 Search Party (2016-2022)

Search Party cast
TBS / HBO Max

Search Party actually began its life on TBS, where it ran for two seasons before getting dropped. This is where HBO took the show on and ran with it. It stars Alia Shawkat (known for Arrested Development) as the protagonist Dory Sief along with John Early, Meredith Hagner, and John Reynolds as her annoying but charming group of friends.

When a friend of theirs from college goes missing, Dory becomes obsessed with finding her and drags her friends into it. The show is quick-witted and gripping, balancing humor and tension perfectly. Each season gets more out of control than the last — in a good way — and there’s no predicting what’s coming next. Search Party is criminally underrated for how good it is. There’s nothing else like it.

19 Gentleman Jack (2019-2022)

Suranne Jones in Gentleman Jack
HBO / BBC One

Suranne Jones stars as Anne Lister in Gentleman Jack. Lister was a real woman who lived in West Yorkshire in the late-1700s to early-1800s. She kept extensive diaries detailing her life including several lesbian affairs, which were dramatized for the show. Gentleman Jack employs the wry, fourth-wall-breaking style we’ve all come to know and love through Fleabag.

These breaks are a nice nod to the fact that we are essentially reading her diaries by watching the program. It was canceled after just two seasons, another casualty of HBO’s recent wave of cuts, but deserved many more. There’s no stuffiness about it, which some are afraid of when it comes to a period piece; its sensibilities are modern and supremely entertaining.

18 Sharp Objects (2018)

Amy Adams in Sharp Objects
HBO

Yes, Sharp Objects was nominated for eight Emmys, but did it win any? No, therefore it remains firmly underrated. Adapted from a novel of the same name by Gillian Flynn (writer of Gone Girl), the story centers around Camille who returns to her hometown to report on a string of murders.

Camille is played beautifully by Amy Adams, with her mother and younger sister played by Patricia Clarkson and Eliza Scanlen respectively. All three put on show-stopping performances in a story with incredible twists and turns. The series was directed by the late Jean-Marc Vallée in his signature style of quick cuts to flashbacks. Its impact was most likely undercut by the fact that it came after Big Little Lies, which was in the same style, but with a more accessible story. Now is the perfect time, however, to give Sharp Objects the time in the spotlight that it deserves.

17 The Rehearsal (2022-Present)

cast The Rehearsal
HBO

In Nathan Fielder’s latest offering, The Rehearsal, he creates scenarios in which people can rehearse for events in their own lives. With the same dry humor we’re used to from Nathan For You, but even greater pathos, The Rehearsal ends up packing a real punch. One scenario he produces is for a pregnant woman, where he simulates the experience of raising a child.

As the season progresses, the overarching plot becomes more and more self-reflective and meta. It’s a fascinating career progression for Fielder and shows off his incredible talent for writing. The Rehearsal is perfect viewing for fans of awkward comedy that has depth to it as well.

16 The Other Two (2019-Present)

Drew Tarver Helene Yorke The Other Two
Comedy Central / HBO

The Other Two is about adult siblings, Cary and Brooke, whose younger brother Chase achieves sudden pop stardom à la early Justin Bieber. The humor of the show is shocking and absurd, highlighting the alarming scenarios that child stars are placed in.

Cary and Brooke are also both hungry to share the spotlight with their brother, and this leads to some desperate situations. The show’s supporting cast is made up of strong talent from the likes of Wanda Sykes, Richard Kind, and Molly Shannon. If you’re looking for something that pokes fun at millennials, the internet, and fame in a way that manages not to be grating, this is the show for you.

Related: 13 Lesser Known HBO Series From the 2000s That Are Worth Revisiting

15 The Leftovers (2014-2017)

The Leftovers justin theroux
HBO

With a bizarre but interesting premise, The Leftovers questions what it would be like if 2% of the population simply disappeared one day. It’s not preoccupied with explaining what happened or why, as the focus remains on how we would respond to an event like that. The answer, ostensibly, is not well. The cast includes heavyweights like Ann Dowd, Liv Tyler, Justin Theroux, and Christopher Eccleston, with no weak links even in minor roles.

Explorations of family dynamics, religion, and depression are at the forefront of its themes, but these are not discussed in a clichéd and tired way as they so often are. The beauty of the show comes from its commitment to ambiguity and refusal to give clear answers. Co-creator Tom Perrotta told GQ that the unsolvable mystery at the heart of the show was important because he "wanted to make an apocalyptic story where the actual 'apocalypse' is psychological."

14 Lovecraft Country (2020)

Lovecraft Country cast
HBO

Lovecraft Country is a horror-drama series about a ma called Atticus, played by Jonathan Majors, who travels across the United States in the 1950s in search of his missing father. He is also joined by Jurnee Smollett’s Letitia and Courtney B. Vance as his uncle George.

The three of them encounter trouble from both the racist inhabitants of the towns they pass through, as well as Lovecraftian monsters. With Jordan Peele as one of the show’s producers, it’s not much of a surprise that it’s equal parts interesting and suspenseful. Lovecraft Country’s soundtrack uses the likes of Etta James and Nina Simone to build a strong sense of place and history that tops off the all-around excellent program.

13 Looking (2014-2015)

Jonathan Groff and Russel Tovey in Looking
HBO

Set in San Francisco, Looking tells the story of a group of three close friends. They’re played by Jonathan Groff as Patrick, Frankie J. Alvarez as Agustín, and Murray Bartlett as Dom Basaluzzo. Despite premiering in 2014, Looking was HBO’s first series centering around gay men.

Significant directors of the show include Andrew Haigh, director of Lean on Pete, whose naturalistic style shines through as the primary director, and Jamie Babbit who directed But I’m a Cheerleader. There is an authenticity to the world of these characters that lends a special feeling to the show. As usually happens with underrated shows on HBO, it didn’t bring in the viewership that was expected and was canceled after its second season.

12 The No. 1 Ladies' Detective Agency (2009)

Jill Scott Anika Noni Rose in The No 1 Ladies Detective Agency
BBC One / HBO

The No. 1 Ladies' Detective Agency is a charming show about a woman called Precious in Botswana, who opens up a detective agency after the death of her father. Precious and her assistant Grace have wonderful chemistry that makes you feel like you’re along for the ride with them.

Richard Curtis, writer, and director of legendary rom-coms like Love Actually, served as a producer and writer for the show, and this comes through in its endearing nature. If you needed any further incentive to start watching, the pilot features David Oyelowo and Idris Elba. With only seven episodes, it’s a quick and witty watch that will brighten up a rainy afternoon.

11 I May Destroy You (2020)

I May Destroy You Michaela Coel
BBC One / HBO

Michaela Coel’s masterpiece I May Destroy You follows her character Arabella as she grapples with being sexually assaulted. As creator and writer of the show, Coel expertly injects humor and intrigue into her narrative, which could have been handled poorly in other hands. The inclusion of comedy doesn’t feel distasteful — it just makes the characters feel more human.

The cast is rounded out by Weruche Opia, Paapa Essiedu, Stephen Wright, and Marouane Zotti, who are all perfect with the tone of the series. I May Destroy You is another show that while it received acclaim, deserved even more and for that reason must continue to be shouted about.

Related: The 15 Best Stand-Up Specials on Max

10 My Brilliant Friend (2018-Present)

My Brilliant Friend
Rai 1 / HBO

My Brilliant Friend is a series adapting the Neapolitan novels by Elena Ferrante. The story chronicles a lifelong on-and-off friendship between two women, Elena and Lila, from the perspective of Elena in her 80s.

Beginning in a suburb of Naples in the 1940s, the show covers themes of corruption, poverty, abuse, and education. It’s fascinating to get a look into a very specific culture that is not often portrayed on screen for audiences outside of Italy. The show captures the energy and magic of its source material, and while it remains faithful to it, it is not weighed down by it.

9 Flight of the Conchords (2007-2009)

The Cast in Flight of the Conchords
HBO

Flight of the Conchords was created by James Bobin, Jermaine Clement, and Bret McKenzie. Clement and McKenzie also star as members of the central folk rock band who move to New York from New Zealand, chasing success. It’s suitably quirky for its late-2000s setting, and this adds to its charm.

Taika Waititi fans might recognize the comedic style, as Clement is a repeat collaborator with him on projects like this and What We Do in the Shadows. In 2021, Clement revealed he had been trying to contact McKenzie about a reunion for the show, so now is the perfect time to catch up before it potentially returns to our screens in the future.

8 Angels in America (2003)

Meryl Streep in Angels in America
HBO

Based on the play of the same name, Angels in America is set during the AIDS crisis and follows a group of people whose stories loosely intertwine. Stars such as Meryl Streep, Al Pacino, Emma Thompson, and Jeffrey Wright lead a cast of excellent performers. It’s equally touching and funny, and these characters will stay with you long after the last episode.

The series made a big splash when it was first released in 2003, but it’s important that a new generation of viewers meet these characters and hear their stories. TV and film can’t be a replacement for education and history, but miniseries like these could be a good place to start.

7 We Are Who We Are (2020)

We Are Who We Are
HBO

We Are Who We Are is a miniseries directed by Luca Guadagnino about a pair of American teenagers on a military base in Italy. Both are outsiders for different reasons which is what draws them together. Ideas that are present in a lot of Guadagnino’s work crop up here; the characters discuss gender, sexuality, family, and home.

Set against the backdrop of Donald Trump’s rise to the presidency, these discussions become even more poignant. With a sparkling score from Dev Hynes (who also makes music under the name Blood Orange), the series comes alive. Its cast includes Jack Dylan Grazer, Jordan Christine Seamón, Chloë Sevigny, Kid Cudi, and Francesca Scorsese. The fact that this remains watched by only a handful of people is an incredible shame.

6 Los Espookys (2018-2022)

Los Espookys
HBO
 

Created by comedians Fred Armisen, Ana Fabrega, and Julio Torres, Los Espookys is a quirky comedy about a group of friends who provide horror wherever people might need it. This includes scaring off potential inheritors of a millionaire’s fortune, planning a quinceanera for a horror-loving girl, and bringing aliens to life for a scientist.

The show is set in a non-specific Latin American country, which Torres told NPR meant that they "found a commonality that feels universal." For those who enjoy Armisen’s style of humor in other projects like Portlandia or Documentary Now!, this is a must-watch. With only six episodes in each of its two seasons, it flies by, and you’re left wanting more.

Related: Best Romance Movies on HBO Max, Ranked

5 The Bronze Garden (2017-Present)

The Bronze Garden HBO Furriel
HBO

The Bronze Garden stars one of Argentina's best performers, Joaquín Furriel as Fabián Danubio, a father who's desperately searching for his missing 4-year-old daughter after she gets seen in the subway and then no more. This HBO crime drama has a riveting first season that will keep you hooked.

The following seasons weren't as good (Danubio's story gets a little... "comical"), but the beginning is good enough to make you try. This one is still going on, so if you connect with it, you'll have lots to binge on.

4 Pretty Little Liars: Original Sin (2022-Present)

Pretty Little Liars: Original Sin characters
HBO Max

This Max-exclusive spin-off of Pretty Little Liars isn't exactly what it appears to be. Pretty Little Liars: Original Sin takes place in the same universe as the more famous show, but instead it's a slasher miniseries that injects horror into a franchise that wouldn't necessarily need it. Full-blown horror.

It's gory and messy, and it's a violent twist on the teenager horror subgenre that'll make The CW make a run for its money. It tells the story of a group of teenagers being haunted by a killer who's very familiar with the shameful past their mothers have. We're talking Carrie-like stuff. People didn't pay attention at first because of the whole horror thing being associated with the teen drama, but slowly it kept gaining followers until season 2 was announced.

3 The Night Of (2016)

The Night Of John Turturro Riz Ahmed
HBO
 

In The Night Of a poor young man is forced to go through hell because of a lousy decision. Nasir decides to party with a beautiful girl he meets one night. This is something he's never been able to be part of because of his race and his upbringing. However, the following morning he wakes up to see her brutally murdered.

Of course, he's the main suspect, and law enforcement agents will do everything to put him in prison. His only hope is a very peculiar attorney who believes in Nasir's innocence. The Night Of was successful during its original run, but people forgot about it quickly. We guess it has to do with the lack of stars in the show, which is a dumb reason not to watch it right now.

2 We Own This City (2022)

Jon Bernthal in We Own This City
HBO

Jon Bernthal is fantastic in HBO's We Own This City. He's Sergeant Wayne Jenkins, a member of a law enforcement agency in Baltimore that gets hassled with racketeering accusations. Jenkins is one of several men that get trapped in a corruption scheme that made Baltimore's finest the start of a huge scandal.

If you like The Wire, then chances are you have to see this one, as it was also created by David Simon. It's only six episodes long and we guarantee they will go by in a flash, though the impact of the series will stay with you for a while.

1 Oz (1997-2003)

Oz show
HBO

Oz tells the story of inmates in a maximum security prison. Inside, there are micro societies based on their own beliefs, upbringings, religion, and ideologies. They constantly collide, but the main story is based on the weakest link being subjected to one of the most horrible monsters on television.

Vernon Schillinger, played by J.K. Simmons, is an Aryan Brotherhood leader with an agenda. Drama television wasn't the same after Oz was released on HBO because of the raw nature of the show. Unfortunately, not many modern TV viewers have watched it.