I have watched the full Leap Day episode of 30 Rock at least a dozen times. It is one of the greatest sitcom episodes in TV history. The “Leap Dave Williams” inset seen above, essentially a parody of The Santa Clause, is wonderful, but my favorite part of the episode is the parody of A Christmas Carol, with the Republican plutocrat Jack Donaghy (Alec Baldwin) as Scrooge. The episode also riffs on many other films – even Indecent Proposal! On top of all that, Tracy Morgan is at the peak of his game as his absurdly funny self.
The writer of this episode, Luke Del Tredici, is now a producer and one of the lead writers on Brooklyn Nine-Nine – and he may be the single most talented and accomplished person without a Wikipedia page. (Present company excepted, of course.)
Fun Fact: the episode was directed by Steve Buscemi.
Yes. I forgot to mention that. Thanks!