I cannot think of anybody I know that didn't think (once in their lifetime) of being like Fred Astaire or becoming a professional dancer, when watching any of his performances in his nice, lovely movies.
I remember being a kid and watching those movies and I dreamt that I was Ginger while dancing in my living room. I swear that I was sure that I was as good as them dancing around the sofa...
Good times. In my opinion, he is still one of the best dancers and performatic man in Show Business. "The" Showman.