'What is Paul?' is the production blog for Greg Mottola's film 'Paul' written by and starring Simon Pegg and Nick Frost.

Here you will find all of the official behind the scenes videos being shot by Lance Bangs as well as the odd candid video or photograph taken by the cast and crew.

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 (voiced by Seth Rogen) 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).... (more)