Ready to see the full goofiness of Simon Pegg and Nick Frost's new alien road comedy Paul? The extra-long, extra-funny trailer is here.

The film, which is being directed by Superbad's Greg Mottola, follows two UK nerds (Pegg and Frost) on the ultimate geek road trip to San Diego Comic Con. On the way they pick up hitchhiking alien Paul (voiced by Seth Rogen). And then the madness begins.

Paul hits theaters March 18, 2011.

[via Yahoo]