Not sure why I didn't see this one go round the first time out, but here's a (really really crummy watermarked version; sorry, couldn't find the clip anywhere else w/o resorting to Hulu) clip of Joseph Gordon-Levitt's recent appearance on Saturday Night Live where, for his monologue, he performs Make 'Em Laugh from Singin' in the Rain.
Did I mention he gives it the full-on Donald O'Connor treatment?
Yes, with that part. Oh and yes, with that part too.
And you can tell he is about the happiest fella ever by the end of the number. As well as the most exhausted. Given the nature of live TV and the backstage hustling, I sure hope he had a few moments to catch his breath before his next sketch.