While shooting a scene in “Star Wars: Episode V – The Empire Strikes Back,” the late Peter Mayhew (Chewbacca) talks to Harrison Ford (Han Solo) in his own Cockney English so Ford can respond more naturally.
Of course Chewie’s grunts and growls — an amalgam of bears, lions, badgers, seals, and a walrus– were overdubbed later. (More on that in this post.)
(via Laughing Squid)