British sci-fi comedy written by and starring Simon Pegg and Nick Frost. Two geeky Brits, Graeme Willy (Pegg) and Clive Gollings (Frost), are driving across the United States in a hired van to a comic book convention in San Diego. As they pass by Area 51, a military base known for multiple UFO sightings, they accidentally pick up an alien, Paul (voiced by Seth Rogen), and before long their quiet road trip has turned into an intergalactic adventure.