Paul(2011)

For the past 60 years, an alien named Paul has been hanging out at a top-secret military base. The space-traveling smart aleck decides to escape the compound and hop on the first vehicle out of town -- a rented RV containing Earthlings Graeme Willy and Clive Collings. Chased by federal agents and the fanatical father of a young woman that they accidentally kidnap, Graeme and Clive hatch a fumbling escape plan to return Paul to his mother ship. And as two nerds struggle to help, one little green man might just take his fellow outcasts from misfits to intergalactic heroes.