Tim Allen
Jason Nesmith
Acting
Sigourney Weaver
Gwen DeMarco
Acting
Alan Rickman
Alexander Dane
Acting
Tony Shalhoub
Fred Kwan
Acting
Sam Rockwell
Guy Fleegman
Acting
Daryl Mitchell
Tommy Webber
Acting
Enrico Colantoni
Mathesar
Acting
Robin Sachs
Sarris
Acting
Jed Rees
Teb
Acting
Justin Long
Brandon
Acting
Missi Pyle
Laliari
Acting
Patrick Breen
Quellek
Acting
Jeremy Howard
Kyle
Acting
Sam Lloyd
Neru
Acting
Rainn Wilson
Lahnk
Acting
J.P. Manoux
Excited Alien
Acting
Dian Bachar
Nervous Tech
Acting
Heidi Swedberg
Brandon's Mom
Acting
Kevin McDonald
Announcer (as Kevin Hamilton McDonald)
Acting
Kaitlin Cullum
Katelyn
Acting
Jonathan Feyer
Hollister
Acting
Corbin Bleu
Young Tommy
Acting
Isaac C. Singleton Jr.
Sarris' Guard
Acting
Joel McKinnon Miller
Warrior Alien
Acting
Todd Giebenhain
Teen in the Bathroom #2
Acting
Jerry Penacoli
Reporter
Acting
Jennifer Manley
Shy Girl
Acting
Matt Winston
Technician #1
Acting
Morgan Rusler
Fan #2
Acting