I actually wouldn't agree with a number of these rankings, maybe why I had a hard time thinking of them. All that Jazz? No, definitely not IMO. On the Town? hardly. The Band Wagon - nice dancing between Fred and Cyd Charrise, but the ending is really tacked on. Gus and Dolls with Sinatra and Brando? No way!
Gene Kelly just seems so smug to me. And the acting is so bad especially compared to today's standards.