Brendan Fraser as Dan Sanders

Brooke Shields as Tammy Sanders

Ken Jeong as Neal Lyman

Matt Prokop as Tyler Sanders

Angela Kinsey as Felder

Skyler Samuels as Amber

Ricky Garcia as Frank

Eugene Cordero as Cheese

Patrice O'Neal as Gus

Jim Norton as Hank

Billy Bush as Drill Sergeant

Samantha Bee as Principal Baker

Alice Drummond as Mrs. Martin

Toby Huss as Wilson

Gerry Bednob as Mr. Gupta

Alexander Chance as Security Guard

Dee Bradley Baker as Animals (voice)

D.C. Pierson as Student (uncredited)

Rob Riggle as Riggs (uncredited)

Wallace Shawn as Dr. Christian Burr (uncredited)