Lamenting the slow decay of TV show theme songs, Jimmy Fallon, with a little help from the cast from NBC's new sitcom Guys with Kids, attempts to revive the American institution with a lengthy walk down Classic Theme Song Lane.

Sam Tsui—a member of the popular College Musical YouTube series—made waves in July with his epic, must-be-seen-to-be-believed Michael Jackson medley. Now, Tsui takes on the Deity of Fierce herself, Lady Gaga—and it rocks.