#1 Parks and Recreation
Yes, I know that this was Michael Scott's last episode of The Office, and you'd think that'd get him the win. But it doesn't Parks and Rec had a fantabulous episode which, while a silly premise (Jerry being a master painter), was executed in a hilarious way gave many of the characters the chance to shine, particularly the show's star, Leslie, who - because she is the show's "straight man" - often does not captivate the audience like Ron or April.
Great product placement with the B story at Bed Bath and Beyond.
#2 The Office
This was an episode full of both humor and heart as we bid farewell to Steve Carrell. Real opportunity for Carrell to demonstrate how the character has grown, particularly in the last year. The thing the episode suffered most from was the presence of Will Farrell. A big guest star should not detract from the most important episode of the show's anchor.
#3 30 Rock
30R also had a dynamite installment, with some excellent meta humor ("Who was the white guy in Invictus?'"), good continuity humor (bringing "back" Condi Rice), and some classic Tracy hijinx which were, while not terribly new, not terribly old either. The "three kinds of heat" that have made the show great.
I watched the first five minutes and gave up -- non-teacher Chang has been a dismal failure and they need to get rid of him. The storyline with him and Shirley has been even worse -- and that's what this episode was about. Let me know if it was any good.