Robert Redford played Bob Woodward in All The President's Men. James Mason played James Leamington in Georgy Girl. David Niven played David Merlin in Bachelor Mother. David Niven played David Slater in The Moon Is Blue. Richard Roundtree played Richard 'Dick' Shannon in Embassy. Peter Finch played Peter Linton in The Rats Of Tobruk. George C. Scott played General George S. Patton Jr. in Patton. Bob Hope was Bob Holcomb in I'll Take Sweden. Jean-Louis Trintignant played Jean-Louis Duroc in Claude Lelouch's French romantic classic Un homme et une femme. Marcello Mastroianni played Marcello Rubini, a journalist who is the central figure in Fellini's La dolce vita.
Eleanor Holm played Eleanor Reed in "Tarzan's Revenge" (done on purpose because of her swimming fame, even though she is basically playing Jane).
In "Abbott And Costello Meet The Invisible Man" Bud Abbott and Lou Costello play "Bud Alexander" and "Lou Francis". This was a case of them using their middle names for their last names.