Justin Long

as Alien #3 / Gorilla #3 / Hyena #3 (voice)

as Matt Farrell

as Alvin (voice)

as Clay Dalton

as Alex

as Gary

as Justin

as Doctor

as AJ

as Darry

as Alvin (voice)

as Christopher

as Brandon St. Randy

as Brandon

as Fake Robin (segment "Super Hero Speed Dating")

as Kevin

as Alvin (voice)

as Lem (voice)

as Self

as Darry Jenner

as Bartleby Gaines

as Alvin (voice)

as Paul Genzlinger

as Wallace Bryton

as Andrew Davis

as Re-Do Guy

as Paul

as Drunken Wingman (uncredited)

as Dean

as Paul Saunders

as Troop Leader Adam

as Garrett Scully

as George Harrison (uncredited)

as Cashier / Troy (voice)

as Henry

as Adam

as Lawyer

as Marty

as Humphrey (voice)

as Patchi (voice)

as Self - Cameo (uncredited)

as Nicholas Baker

as Yogi Bayer

as Dell

as Kevin Murphy (voice)

as Dan Gallo

as Roboto (voice)

as Self

as Self

as Liam

as Simon

as Shaving Nurse

Role: Writer

as Sam Newman

as Jesse

as Senn (voice)

as Junior

as Nathan Bratt

as Self - Guest

as Scott

as Henry Waters

as Chris Harken

as Keith

as Frank

as Bruce

as Vickers

as Todd

as Self - Guest

as Self - Guest

as Hap Jackson

as Neil

as Dean

as Ethan Hawkins

as Arno Penzias

as Self

as Self

as Self

as Self - Guest

as Stank

as Scott Stewart

as Adam

as Bryce

as Alvin Seville (Voice)

as Ross

as Sheriff Stanton

as Zack

as Spoonie

as Holt Mulligan

as Donald

as Max

as David

as Zerk Wilder

as Warren Cheswick

as Self - Guest

as Chase Revere

as Tim

as Steve Jobs

as Josh

as Self

as Spyro The Dragon (voice)

as Dwayne (voice)

as Mookie

as Self

as Self

as Gary Garrison (voice)

as Self - Panelist

as Self

as Robin

as Self

as Self

as Self - Presenter

as Self - Contestant

as Hal Nestor

as Jack

as Self

as Self

as Self - Panelist

as Junior

as Self

as Self

as Self

as Self

as Corp. James R. Garrett / Sgt. John H. Morris

as Checkout Boy

as Self - Host

as Self

as Principal Van

as Zerk Wilder