I have stumbled across a movie on TCM, based on a book by Evelyn Waugh, which features, in no particular order, Robert Morse, Jonathan Winters (in a dual role), Milton Berle, James Coburn, John Gielgud, Tab Hunter, Liberace, Roddy McDowall, Robert Morley, Rod Steiger, Paul Williams, Jamie Farr, Bernie Kopell and sportscaster Chick Hearn.

Jayne Mansfield and Ruth Gordon were cut out of the movie, according to IMDb.

Of couse, if you’ve seen one John Gielgud / Jonathan Winters collaboration, you’ve seen them all.
[imdb]0059410[/imdb]