[identity profile] selenesue.livejournal.com 2008-04-30 03:13 pm (UTC)(link)
Gene Kelly but only barely. "Singin' In The Rain" was one of my "comfort films" in film school.

IMDB.com has a function where you can find all productions where two different people's names were listed. Most of what comes up with these two notables seem to be compilations like THAT'S ENTERTAINMENT and various tributes. However, "Ziegfeld Follies" [1946] appears to fill the bill with their only known joint number, "The Babbit and the Bromide." http://www.imdb.com/title/tt0039116/