Here's what's probably the most absurd, albeit hilarious, music-related video of the day. The folks at NBC sitcom 30 Rock put together a killer webisode starring Jack (Alec Baldwin) and a few select musical guests. We're talking Childish Gambino, Cee-Lo Green, Ryan Adams, and Michael McDonald, the last of whom steals the bit with a cover of the Saved By The Bell theme song. No joke. Watch it all go down in the above video.