Universal has released the first poster for Paul, a science-fiction comedy starring Hot Fuzz duo Simon Pegg and Nick frost, directed by Superbad's Greg Mottola. What's more, Seth Rogen voices the alien troublemaker!

Check out the poster below and see the film's hilarious teaser trailer in our Paul trailers gallery! Hit the jump for a full synopsis and look out for the film in theaters on March 18th 2011 (despite what the poster says.)

Click the thumbnail to view larger:

    Simon Pegg and Nick Frost (Hot Fuzz, Shaun of the Dead) reunite for the comedy adventure Paul as two sci-fi geeks whose pilgrimage takes them to America’s UFO heartland.  While there, they accidentally meet an alien who brings them on an insane road trip that alters their universe forever.

    For the past 60 years, an alien named Paul has been hanging out at a top-secret military base.  For reasons unknown, the space-traveling smart ass decides to escape the compound and hop on the first vehicle out of town—a rented RV containing Earthlings Graeme Willy (Pegg) and Clive Collings (Frost).

    Chased by federal agents and the fanatical father of a young woman that they accidentally kidnap, Graeme and Clive hatch a fumbling escape plan to return Paul to his mother ship.  And as two nerds struggle to help, one little green man might just take his fellow outcasts from misfits to intergalactic heroes.