Aspiring director Corky St. Clair and the marginally talented amateur cast of his hokey small-town musical production go overboard when they learn that Broadway theater agent Mort Guffman will be in attendance.

Christopher Guest
as Corky St. Clair

Eugene Levy
as Dr. Allan Pearl

Fred Willard
as Ron Albertson

Catherine O'Hara
as Sheila Albertson

Michael Hitchcock
as Steve Stark - Councilman

Larry Miller
as Glenn Welsch - Mayor

Parker Posey
as Libby Mae Brown

Bob Balaban
as Lloyd Miller

Don Lake
as Phil Burgess - Blaine Historian

David Cross
as UFO Expert