TOD:
Kelly: The Pirate, Singin in the Rain, An American in Paris (all for the dancing, not the acting). On the Town for both acting/dancing.
O'Connor: Singin in the Rain, There's No Business Like Show Business, Call Me Madam and his Francis movies.
Reynolds: The Unsinkable Molly Brown, My Six Loves, How the West Was Won, Singin in the Rain