Puerto Rican actor, probably best known for multiple portrayals of
Cyrano de Bergerac, but SF fans will probably remember him as Padishah Emperor Shaddam IV in
David Lynch's
Dune.
Other films include The Swarm, the Jackie Chan film The Big Brawl, Lawrence of Arabia, and The Greatest Story Ever Told.
He was the father of Miguel Ferrer and uncle of George Clooney
Some info pulled from the Internet Movie Database.