Dennis Hopper has parlayed his awesome guest spot on ‘Entourage’ last week into a part in Kevin Costner’s upcoming comedy Swing Vote.

Variety says that in addition to Hopper Nathan Lane, Kelsey Grammer, Stanley Tucci and George Lopez are joining the suddenly rather awesome sounding film’s cast. The movie casts Costner as a politically apathetic working dad who is thrust into the political process when his one vote will decide the election. Hopper and Gammer will play the film’s Democrat and Republican candidates respectively. Lane and Tucci will be their campaign managers.

For the record, I’m voting for Dennis Harper. He’s bound to legalize pot and besides, I get the feeling that Kelsey Grammer is only pretending to be smart. You just know in real life he’s big dummy.