Walter Becker's latest comedy has picked up another brilliant actor. According to The Hollywood Reporter, Matt Dillon is joining the cast of Old Dogs.

The screenplay, written by David Diamond and David Weissman, follows the adventures of two divorced dads played by John Travolta and Robin Williams. They are suddenly forced to care for their kids for two straight weeks.

Dillon is playing Barry, an overzealous summer camp captain who thinks the two men are gay lovers who have adopted twins.

The film begins shooting this summer.