Chris Makepeace as Clifford Peache

Adam Baldwin as Ricky Linderman

Matt Dillon as Melvin Moody

Paul Quandt as Carson

Hank Salas as Mike

Joan Cusack as Shelley

Dean R. Miller as Hightower

Tim Reyna as Koontz

Richard Bradley as Dubrow

Denise Baske as Leilani

Vicky Nelson as Freddy

Tom Rielly as Reissman

Paul Charbonneau as Allen

Laura Salenger as Girl

Bert Hoddinott as Burt

Cindy Russ as Cheerleader No. 1

Laurie McEathron as Cheerleader No. 2

Lori Mandell as Crying Girl

Dean Devlin as Boy

Ruth Gordon as Gramma

Martin Mull as Mr. Peache

John Houseman as Dobbs

Craig Richard Nelson as Griffith

Kathryn Grody as Ms. Jump

Dick Cusack as Principal Roth

Dorothy Scott as Librarian

Angelo Anthony Buscaglia Jr. as Basketball Coach

Kitt York as Stewardess

Marge Kotlisky as Mrs. Linderman

Tim Kazurinsky as Workman

Bill Koza as Mr. Dunphy

Vivian Smolen as Mrs. Dunphy

Bruce Jarchow as Roberto

Andrea Dillon as Hostess

Leonard Mack as Custodian

George Wendt as Engineer

Jerome Myers as Counterman

Freddy Moss as 2nd Counterman

Joseph Cohn as 3rd Counterman

Pat Billingsley as Biology Teacher

Barbara Hoddinott as Teacher in Hallway

Eddie Gomez as Eddie

Jennifer Beals as Clifford's Friend (uncredited)

Sandra Bogan as Joan (uncredited)

Gary Houston as Drunk in the Park (uncredited)

Beth Lane as Tap Dancer (uncredited)

Steven Rozic as Hotel Doorman (uncredited)