I'd always heard that Desi Arnaz/Ricky Ricardo was a Xavier Cugat wannabe, so I decided to take a peek at YouTube. Here are Cyd Charisse and Ricardo Montalban (as you've never seen him!) dancing, Xavier Cugat and his orchestra performing. Watch Cyd, to me it looks like these are the very movements that Lucy imitates every time she sneaks herself into performing in one of Ricky's shows.
[youtube=425,350]http://www.youtube.com/watch?v=ykivlKJQHWE[/youtube]