One of the movies that will be in the next Martin & Lewis collection is You're Never Too Young. Like several of the team's movies, this was a remake of an earlier Paramount hit: Billy Wilder's The Major and the Minor, with Jerry pretending to be a little boy instead of Ginger Rogers pretending to be a little girl.
But this movie is more than just an entertaining musical comedy; it's also the answer to a trivia question. Or at least one of the answers. Because it's one of the few remakes that features an actor from the original -- in a different part. The lovely Diana Lynn, who played a wisecracking schoolgirl in The Major and the Minor, here plays a teacher, and Dean Martin's love interest.
Are there any other remakes where an important part is played by an actor from the original movie -- in a different role than he or she played originally? (I say "important" part because there are a number of remakes featuring people from the original in small or cameo roles, but that's not what I'm talking about here.)
Update: I thought of another one -- George Tobias, whom most of you know as Mr. Kravitz on Bewitched, was in Ninotchka as a guy who won't give Melvyn Douglas a visa to enter Russia; in the musical remake, Silk Stockings, he played the Commissar of Arts.