Coneheads

Coneheads is a movie starring Dan Aykroyd, Jane Curtin, and Robert Knott. Aliens with conical crania crash-land on Earth.
A pair of aliens arrive on Earth to prepare for invasion, but crash instead. With enormous cone-shaped heads, robotlike walks and an appetite for toilet paper, aliens Beldar and Prymatt don't exactly blend in with the population of Paramus, N.J. But for some reason, everyone believes them when they say they're from France.