Suggestions by @noahharris

Danny Elfman

as Composer in Beetlejuice vs Gremlins

Steven Spielberg

as Producer in Beetlejuice vs Gremlins

Tim Burton

as Producer in Beetlejuice vs Gremlins

Tim Burton

as Writer in Beetlejuice vs Gremlins

Chris Columbus

as Writer in Beetlejuice vs Gremlins

Chris Columbus

as Director in Beetlejuice vs Gremlins

Andre Meadows

as Gremlin voices in Beetlejuice vs Gremlins

Finn Wolfhard

as Randy Peltzer in Beetlejuice vs Gremlins

Frank Welker

as Stripe/Gremlin voices in Beetlejuice vs Gremlins

Howie Mandel

as Gizmo/Gremlin voices in Beetlejuice vs Gremlins

Phoebe Cates

as Kate Beringer Peltzer in Beetlejuice vs Gremlins

Zach Galligan

as Billy Peltzer in Beetlejuice vs Gremlins

Winona Ryder

as Lydia Deetz in Beetlejuice vs Gremlins

Michael Keaton

as Betelgeuse in Beetlejuice vs Gremlins

David Zucker

as Producer in Police Squad!

James Franco

as Rocco Dillon in Police Squad!

David Tennant

as Quinton Hapsburg in Police Squad!

Matthew Perry

as Ted Olsen in Police Squad!

Keegan-Michael Key

as Papshmir in Police Squad!

Joonas Suotamo

as Al in Police Squad!