Richard Dreyfuss as Curt
Ron Howard as Steve
Paul Le Mat as John
Charles Martin Smith as Terry
Cindy Williams as Laurie
Candy Clark as Debbie
Mackenzie Phillips as Carol
Wolfman Jack as Disc Jockey
Bo Hopkins as Joe
Manuel Padilla Jr. as Carlos
Beau Gentry as Ants
Harrison Ford as Bob Falfa
Jim Bohan as Holstein
Jana Bellan as Budda
Deby Celiz as Wendy
Lynne Marie Stewart as Bobbie
Terence McGovern as Mr. Wolfe
Kathleen Quinlan as Peg
Ty Crowley as Eddie
Scott Beach as Mr. Gordon
John Brent as Car Salesman
Gordon Analla as Bozo
John Bracci as Station Attendant
Jody Carlson as Girl in Studebaker
Del Close as Man at Bar
Chuck Dorsett as Man at Accident
Stephen Knox as Kid at Accident
Joe Miksak as Man at Liquor Store
George Meyer as Bum at Liquor Store
James Cranna as Thief
Johnny Weissmuller Jr. as Badass #1
William Niven as Clerk at Liquor Store
Al Nalbandian as Hank
Bob Pasaak as Dale
Christopher Pray as Al
Susan Richardson as Judy
Fred Ross as Ferber
Jan Dunn as Old Woman
Charlie Murphy as Old Man
Ed Greenberg as Kip
Lisa Herman as Girl in Dodge
Mark Anger as Mr. Kroot
Kay Lenz as Jane
Caprice Schmidt as Announcer at Dance
Joe Spano as Vic
Debralee Scott as Falfa's Girl
Ron Vincent as Jeff
Donna Wehr as Carhop
Cam Whitman as Balloon Girl
Jan Wilson as Girl at Dance
Suzanne Somers as Blonde in T-Bird
Flash Cadillac as Herby & the Heartbeats
Linda Christensen as Girl
Jeannette Dilger as Student
Dennis Falt as Student
Warren Knight as Bass Player - Herby & the Heartbeats
Paul Lambert as Sleeping Police Officer
Ken Martinez as Mooner
Rick May as Boy In Car
Sam McFadin as Singer - Herby & the Heartbeats
Kris Moe as Keyboards - Herby & the Heartbeats
Linn Phillips III as Guitar - Herby & the Heartbeats
George Robinson as Saxophone - Herby & the Heartbeats
Music by the great Kevin MacLeod