Several of you have reminded me that Tony Curtis made at least one other stage appearance. In 2002, he toured for a time in Sugar, the musical comedy adaptation of the movie that made him famous, Some Like It Hot. In this case, he didn't play his old role. He played Osgood Fielding III, the role Joe E. Brown had played in the film. As one person wrote me, "He got star billing even though he was only on stage about fifteen minutes." Since the script was already frozen, he only had to learn the role once.
And since we're talking about Tony Curtis, let's mention his memorable performance as Stoney Curtis in an episode of The Flintstones. A pretty good episode, I should say.