Suggestions by @sammartin

Tom Hanks

as Pete in O Brother, Where Art Thou (1985)

Eugene Levy

as Vernon T. Waldrip in O Brother, Where Art Thou (1985)

Stephen King

as Writer in O Brother, Where Art Thou (1985)

David Lynch

as Writer in O Brother, Where Art Thou (1985)

Dan Aykroyd

as Writer in O Brother, Where Art Thou (1985)

Harold Ramis

as Writer in O Brother, Where Art Thou (1985)

Olivia Newton-John

as Siren 3 in O Brother, Where Art Thou (1985)

Stevie Nicks

as Siren 2 in O Brother, Where Art Thou (1985)

Dolly Parton

as Siren 1 in O Brother, Where Art Thou (1985)

Dolly Parton

as Siren 3 in O Brother, Where Art Thou (1985)

Stevie Nicks

as Siren 1 in O Brother, Where Art Thou (1985)

Dean Cundey

as Cinematographer in O Brother, Where Art Thou (1985)

Douglas Slocombe

as Cinematographer in O Brother, Where Art Thou (1985)

George Harrison

as Producer in O Brother, Where Art Thou (1985)

George Harrison

as Executive Producer in O Brother, Where Art Thou (1985)

Terry Jones

as Director in O Brother, Where Art Thou (1985)

Terry Gilliam

as Director in O Brother, Where Art Thou (1985)

Ethan Coen

as Writer in O Brother, Where Art Thou (1985)

Joel Coen

as Writer in O Brother, Where Art Thou (1985)

Stephen King

as Writer in O Brother, Where Art Thou (1985)