Buckaroo Banzai is a rock-star/brain-surgeon/comic-book-hero/samurai who along with his group, the Hong Kong Cavaliers, must stop evil creatures from the 8th dimension (all named John) who are trying to conquer our dimension. He is helped by Penny Pretty, who is a dead ringer for his ex-wife, and some good extra-dimensional beings who look and talk like Jamaicans.
- Peter Weller
- John Lithgow
- Ellen Barkin
- Jeff Goldblum
- Christopher Lloyd
- Jonathan Banks
- Clancy Brown
- John Ashton
- Ray Birk
- Gary Bisig
- Matt Clark
- Mariclare Costello
- John Davis
- Rosalind Cash
- Bill Henderson
- Robert Gray
- Leonard Gaines
- Jessie Ferguson
- Damon Hines
- Dan Hedaya
- Ronald Lacey
- Robert Hummer
- James Keane
- Robert Ito
- Laura Harrington
- Francine Lembi
- Kenneth Magee
- Read Morgan
- Carl Lumbly
- Sam Minsky
- Pepe Serna
- William Traylor
- Gerald Peterson
- James Rosin
- Radford Polinskey
- Kent Perkins
- Jane Marla Robbins
- Yakov Smirnoff
- Lewis Smith
- Michael Santoro
- Billy Vera
- Kevin Sullivan
- Vincent Schiavelli
- Director: W. D. Richter
- Screenplay: Earl Mac Rauch
- Screenplay: H. Bud Otto
- Executive Producer: Sidney Beckerman
- Composer: Michael Boddicker
- Editor: George Bowers
- Art Director: Stephan Dane
- Producer: Neil Canton
- Art Director: Richard Carter
- Sound Editing : Michael Evje
- Special Effects (Digital, Visual) : Michael Fink
- Costume Designer: Aggie Guerrand
- Sound Editing : Bones Howe
- Associate Producer: Dennis Jones
- Cinematographer: Fred Koenekamp
- Casting Director: Terry Liebling
- Editor: Richard Marks
- Executive Producer: Michael Nathanson
- Producer: W. D. Richter
- Production Designer: J. Michael Riva
- Special Effects (Digital, Visual) : Burman Studio
