Ellen DeGeneres
Herself
Jamie Lee Curtis
Dr. Judy Peterson (uncredited)
Alex Trebek
Himself
Bill Nye
Himself
Johnny Gilbert
Jeopardy announcer (voice)
Mary Kay Bergman
Female WNRG Newscaster (voice)
Corey Burton
Radio Newscaster(voice)
O
Olgia Campbell
Jeopardy Assistant
S
Steven Dean Davis
Multiple Characters (uncredited)
Michael Richards
Caveman discovering fire (uncredited)
B
Benny Wasserman
Albert Einstein (uncredited)