You Must Remember This: The Warner Bros. Story 2008

Jack L. Warner, Harry Warner, Albert Warner and Sam Warner were siblings who were born in Poland and emigrated to Canada near the turn of the century. In 1903, the brothers entered the budding motion picture business. In time, the Warner Brothers moved into film production and would open their own studio in 1923.

Cast:

Clint Eastwood
Narrator 

Carroll Baker
Self 

Warren Beatty
Self 

James Cagney
Self (archive footage) 

Alexis Smith
Self 

Claire Trevor
Self