Harry Nilsson as Self - Narrator (archive footage)

Richard Perry as Self

Doug Hoefer as Self

Jimmy Webb as Self

Micky Dolenz as Self

Van Dyke Parks as Self

Una Nilsson as Self

John Lennon as Self (archive footage)

Randy Newman as Self

Mark Hudson as Self

Ringo Starr as Self (archive footage)

Yoko Ono as Self

Tom Smothers as Self

Dick Smothers as Self

Terry Gilliam as Self

Robin Williams as Self