Suggestions by @alexmacleod
472 suggestions
Faye Dunaway
as Princess Bala in Antz (1969)

Nicholas Cage
as Fred in Big Hero 6 (1994)

Brad Bird
as Director in The Smurfs (2001)
Adam West
as Number 2 in Austin Powers (1987-1992)

Louis Armstrong
as (It's The Time Of Your Life Performed By) in A Bug's Life (1968)

Oliver Reed
as Tai Lung in Kung Fu Panda (1968-1976)
Richard Williams
as Director in Kung Fu Panda (1968-1976)
Richard Williams
as Producer in Kung Fu Panda (1968-1976)

Paul Newman
as Indiana Jones in Raiders of the Lost Ark (1971)

Malcolm McDowell
as Tai Lung in The Kung Fu Panda Trilogy (1988-1996)

Alun Armstrong
as Tommy in Snatch (1973)

Paul Nicholas
as Tommy in Snatch (1973)

Michael Douglas
as Batman in Dark Knight Trilogy (1985-1992)

Eric Stoltz
as John Blake in Dark Knight Trilogy (1985-1992)

Charlie Sheen
as Green Lantern in Green Lantern (1991)
Richard Williams
as Director in A Bug's Life (1968)

Rudolph Walker
as Vinny in Snatch (1973)

Ryan O'Neal
as "One Punch"-Mickey in Snatch (1973)
Marlon Brando
as Cousin Avi in Snatch (1973)

Malcolm McDowell
as Turkish in Snatch (1973)