Frankie Muniz (Jason Shepherd)
Paul Giamatti (Marty Wolf)
Amanda Bynes (Kaylee)
Amanda Detmer (Monty Kirkham)
Donald Faison (Frank Jackson)
Ned Brower (Rudy)
Jake Miner (Aaron)
Tracey Cherelle Jones (Penny)
Timmy Fitzpatrick (Darren)
Pat O'Brien (Himself)
Marisa Petroro (reporter)
Sandy Gimpel (Old Lady)
Marissa Parker (Reporter)
C.J. Picerni (ninja kid)
Kanan Hooker (ninja kid)
Houston Hooker (ninja kid)
Steven Shenbaum (Tram Guide)
Kenan Thompson (Party Goer)
Brian Turk (The Masher)
Andrea Sevilla (Housekeeper)
John Cho (Dustin Wong)
Randall Newsome (Photography)
Mike Smith (Limo Driver)
Pamela Paulshock (Female Extra)
Matthew Frauman (Lester Golub)
Don Yesso (Rocco Malone)
Rebecca Corry (Astrid Barker)
Sparkle (Grandma Pearl)
Tim Haldeman (Surburban Dad)
Alex Breckenridge (Janie Shepard)
Taran Killam (Bret Callaway)
Michelle Griffin (Shandra Duncan)
Ted Rooney (Boring Teacher)
Andre Rosey Brown (Security Guard)
John Gatins (Tow Truck Driver)
Corinne Reilly (Wolf Party Guest)
Shawn Levy (Wolf Party Guest)
Dustin Diamond (Wolf Party Guest)
Bart Myer (Wolf Party Guest)
Christine Tucci (Carol Shepherd)
Sean O'Bryan (Leo)
Amy Hill (Jocelyn Davis)
Lee Majors (Vince)
Sandra Oh (Mrs. Caldwell)
Russell Hornsby (Marcus Duncan)
Michael Bryan French (Harry Shepherd)