Cast a movie with actors of yesteryear

Aren’t they all still alive?

Sky Captain and the World of Tomorrow

James Garner as Sky Captain
Blythe Danner as Polly Perkins
Jane Russell as Franky
Levon Helm as Dex
Tom Hiddelston as Dr. Totenkopf

Sleuth

young Laurence Olivier as Milo Tindle
Christopher Lee as Andrew Wyke

Rats. Misread OP.

An American Werewolf in London

River Phoenix as Jack
John Belushi as David
Diana Rigg as Nurse Alex
Tyrone Power as dart missing guy (Slaughterd Lamb)
Charles Laughton as Alamo joke guy
Julian Sands as keep off the moors guy
Patrick McGoohan,as the investigating doctor

All positively undead

And then I mixed up the two leads. Hope it was obvious.
River Phoenix as David (the Werewolf)
John Belushi as Jack Goodman (the undead friend)

Robert Heinlein’s The Rolling Stones

Dwayne Hickman as the twins.
Maggie Smith as Grandma Hazel
Fred MacMurray as Roger Stone
June Lockhart as Dr. Edith Stone
Audrey Hepburn as Meade
Freddy Bartholomew as Buster
Robert Preston as Captain Vandenberg
Victor MacLaglen as One-Price

If we’re now putting the TEN COMMANDMENTS cast in Marvel roles: Yul Brynner as Professor X, and Charlton Heston as Magneto?

Get your paws off me, you damned dirty Beast!

Actually, before 2000, when Patrick Stewart played the role, most comic book artists based their drawings of Professor X on Yul Brynner.

Stan Lee once said that when writing dialog, he imagined Professor X sounding like Leslie Howard with an American accent. He imagined the Beast with Tony Randall’s voice.