This is fun:
AFI's 100 Years ... 100 Songs: America's Greatest Movie Music
One of my faves, Meet Me in St. Louis, made it in the list twice and so did some of Judy Garland's other stuff. "Puttin' on the Ritz" from Young Frankenstein made it, as did "Summer Nights" from Grease. It's a pretty interesting list. Betcha didn't realize you knew this many movie songs.