The official U.S. trailer of the upcoming Simon Pegg/Nick Frost sci-fi road trip comedy has hit the ‘Net. In it you should spot Jane Lynch, Jason Bateman, Kristen Wiig, Bill Hader, and other surprises. If for some crazy reason you couldn’t recognize the alien’s voice–that’s Seth Rogen. Feel free to rewatch the international trailer right here. Paul hits theatres March 18, 2011.