Touchstone Pictures and has premiered the full length trailer for The Hitchhiker's Guide to the Galaxy!

Hitting theaters April 29th, the action sci-fi comedy stars Martin Freeman, Mos Def, Zooey Deschanel, Anna Chancellor, Bill Nighy, Sam Rockwell, Warwick Davis, John Malkovich, Steve Pemberton and Stephen Fry.

CLICK HERE to watch the new trailer!

The Hitchhiker's Guide to the Galaxy revolves around central character Arthur Dent (Freeman), who is rescued from the Earth by alien "Ford Prefect" when the world as we know it is destroyed to make way for a new hyperspace bypass. Mos Def plays Ford Prefect, an undercover alien who sets off on an intergalactic journey with his best friend and the film's protagonist, earthling Arthur Dent. The duo hitch a ride through space -- with the two-headed ex-hippie Zaphod (Rockwell); his girlfriend, the beautiful scientist Trillion (Deschanel); and a robot -- to discover the meaning of life. Malkovich will play a religious cult leader called Humma Kavula.