Corky St. Clair

Christopher Guest

Sheila Albertson

Catherine O'Hara

Dr. Allan Pearl

Eugene Levy

Ron Albertson

Fred Willard

Libby Mae Brown

Parker Posey

Lloyd Miller

Bob Balaban

Steve Stark - Councilman

Michael Hitchcock

Glenn Welsch - Mayor

Larry Miller

Clifford Wooley

Lewis Arquette

Johnny Savage

Matt Keeslar

UFO Expert

David Cross

UFO Abductee

Paul Dooley

Not Guffman (Mr. Roy Loomis)

Paul Benedict

Phil Burgess - Blaine Historian

Don Lake

Gwen Fabin-Blunt - Councilwoman

Deborah Theaker

Tucker Livingston - Councilman

Scott Williamson

Red Savage

Brian Doyle-Murray

Singing Auditioner

Jim McQueen

Ping Pong Ball Juggler

Turk Pipkin

Raging Bull Auditioner

Jerry Turman

Costume designer

Margaret Bowman

Mrs. Allan Pearl

Linda Kash

Caped Man at Auditions

Bob Odenkirk

Costume Designer

Miriam Flynn

Singing Auditioner

James McQueen

Beautiful Dreamer Auditioner

Kathy Lamkin

Stage Manager

Jill Parker-Jones

Basketball Coach

Sean Masterson

Adele Whitman

Morwenna Banks

Rita Savage

Frances Fisher

Singing Woman

Mary Jane Prail

Blaine Community Orchestra - Saxophone

Johnny Reno

UFO Witness

Larry Hovis

Blaine Community Orchestra - Trumpet, Timpani, Glockenspiel

CJ Vanston

UFO Witness

June Weber

Doctor

Michael McCarthy

Lightning Strikes Auditioner (uncredited)

Lou Christie

Dairy Queen Worker / Crowd (uncredited)

Shane Felux

TV Commercial Director (uncredited)

Joseph T. Garrity