All Cast
Steve Martin
Self / Various
Dan Aykroyd
Yortuk Festrunk / Irwin Mainway / Alexander Haig / Dr. Treves
Bill Murray
Bytes
John Belushi
Zhelezna Postruk
Eric Idle
Reporter
Laraine Newman
The Artist's Friend / Mona
Al Franken
Paul Shaffer
Self / Jo Jo the Dog-Faced Boy
Don Pardo
Self - Announcer (voice)
Tom Davis
Jim Downey
Gregory Hines
Self / Lionel Foot
Lauren Hutton
The Artist
Lynn Redgrave
Mrs. Kendal