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