Weekend Box Office:

1) Harry Potter and the Half-Blood Prince $79.4 million

2) Ice Age: Dawn of the Dinosaurs $17.7 million

3) Transformers: Revenge of the Fallen $13.7 million

4) Bruno $8.3 million

5) The Hangover $8.3 million

6) The Proposal $8.2 million

7) Public Enemies $7.5 million

8) Up $3.1 million

9) My Sister's Keeper $2.8 million

10) I Love You, Beth Cooper $2.6 million

Harry Potter and the Half-Blood Prince dominated the mid-July box office, bringing in an estimated $159.6 million since opening on Wednesday. Over the course of the weekend, the film brought in $79.4 million, but failed to break any single record, most of which are now owned by that giant robot film Transformers: Revenge of the Fallen. J.K. Rowling's sixth book still proved to be quite popular on the big screen, as fans secured its place as the 2nd biggest five-day opening for a movie that debuted on a Wednesday. Strong word of mouth will more than likely keep this highly praised sequel afloat through most of August.

Ice Age: Dawn of the Dinosaurs stayed in second place this weekend, bringing in another $17.1 million. That brings its cumulative grosses up to $152 million. Pretty hefty, though still not enough to beat its previous two entries in overall earnings. Transformers: Revenge of the Fallen is still going strong in its fourth week of release. Earning $13.7 million for third place, the film has now earned $363 million domestically, and $746.9 million worldwide. That still only makes it the 13th highest grossing film of all-time, so it has some distance to go before it's at the top of the cinematic dog pile.

(500) Days of Summer opened on the arthouse scene to the tune of $838,000, placing it at number twelve on the charts while giving it the highest per screen average of the weekend. Playing on 27 screens, this romantic comedy starring Joseph Gordon Levitt and Zooey Deschanel took in $31,037 at each of its locations.

Next weekend is a mixed bag of genre films as Disney's kiddy flick G-Force opens against the R rated comedy The Ugly Truth and the horrific thriller Orphan. Its tough to say who'll come out on top, as all of these new releases have to contend with Comic-Con 2009.