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Paul is a 2011 British-American sci-fi comedy film written by Simon Pegg and Nick Frost and directed by Greg Mottola. It stars Pegg and Frost as two British sci-fi fans who encounter an alien named Paul (voiced by Seth Rogen) while on a road trip across the United States. The film was a commercial success, grossing over $47 million worldwide against a production budget of $20 million.