The American Film Institute poll puts Singing in The Rain at the top of the pack as the greatest movie musical. The top ten list is as follows:
1. Singin' in the Rain
2. West Side Story
3. The Wizard of Oz
4. The Sound of Music
5. Cabaret
6. Mary Poppins
7. A Star is Born
8. My Fair Lady
9. An American in Paris
10. Meet Me in St Louis
Not sure what made the top 100 list but I would hope to have seen Johnny Depp's 'Cry Baby', Ethel Merman in 'There's No Business Like Show Business', 'The Producers' (original version), 'Scrooge' The musical with a rip-roaring chorus of 'Thank You Very Much', Bab's 'Hello Dolly', Monroe & Russell out bossoming each other in 'Gentlemen Prefer Blondes', I'm dreamin of a 'White Christmas', 'High Society', 'The King & I', 'Moulin Rouge', 'Oliver' and 'Grease', to name but a few!