30 Rock is the only show that I can recall doing much of anything with Leap Day.  And I only recall that because I’d been watching older episodes during the down-time between fall and winter season on television.  Here’s one way the show “did right” by the day: a “Leap Day Carol” about Jack and his daughter:

And then there’s the story of Leap Day Williams himself, a gag played throughout an episode by Jim Carrey.  All wonderfully absurd (with a bit of Peter Jackson’s Bilbo Baggins at the end).