Suggestions by @mcorkrean

Mary Anderson

as Mrs. Glenn in The Nice Guys (1976)

Geraldine Fitzgerald

as Judith Kuttner in The Nice Guys (1976)

Tom Waits

as Victor Curry/Blueface in The Nice Guys (1976)

Phylicia Rashād

as Tally in The Nice Guys (1976)

Robert Earl Jones

as Edward Harris/Older Guy in The Nice Guys (1976)

Lesley-Anne Down

as Amelia Kuttner in The Nice Guys (1976)

Kimiko Glenn

as Jubilation Lee in Marvel Studios' X-Men

Elliot Page

as Bobby Drake/Iceman in Marvel Studios' X-Men

Doug Coleman

as Choreographer in Kiss Kiss Bang Bang (1985)

David Byrne

as Composer in Kiss Kiss Bang Bang (1985)

Edward Saxon

as Producer in Kiss Kiss Bang Bang (1985)

Bo Goldman

as Writer in Kiss Kiss Bang Bang (1985)

Shane Black

as Writer in Kiss Kiss Bang Bang (1985)

Dedee Pfeiffer

as Teen Harmony in Kiss Kiss Bang Bang (1985)

Natasha Lyonne

as Harmony age 7 in Kiss Kiss Bang Bang (1985)

Noble Craig

as Human Worm in Kiss Kiss Bang Bang (1985)

George Clooney

as Teen Harry in Kiss Kiss Bang Bang (1985)

Ioan Gruffudd

as Harry age 9 in Kiss Kiss Bang Bang (1985)

Jonathan Demme

as Director in Kiss Kiss Bang Bang (1985)

Smokey Robinson

as Bear in Genaros Beer Commercial (uncredited) in Kiss Kiss Bang Bang (1985)