"NCIS" — Tony, Ziva, and McGee resign
What? Gibbs's team took the fall for all their questionable tactics? This is Iran-Contra all over again! Or at least Martha Stewart. Dammit, Jack Bauer never had this kind of trouble!
What we're trying to say, Leroy Jethro Gibbs, is that you'd better get these people their jobs back! Do you know how hard it is to find a job as a Navy criminal investigator in this down economy? What are they gonna do — work at Starbucks? There are only so many times you can send the espresso nozzles off to Abby in the lab before they ask you to hand in your apron.
"The Office" — Michael Scott returns for the finale
Though Steve Carell said he'd never return, and though the cast and crew swore for months that he hadn't returned, Michael Scott made one last appearance on the series finale of "The Office."
"It was so thrilling. We all just flat-out lied!" gushed John Krasinski after the episode debuted, saying he planned to apologize to David Letterman for it. There were concerns that Carell showing up in a season that many fans had decried for its lack of Carell would overshadow the rest of the finale. In the end, though, his cameo was as restrained and tasteful as the rest of his time on the series was heavy-handed and crass (in the best possible way, of course).
"Mad Men" — Sally Draper catches her dad in flagrante delicto
One of the best things about "Mad Men" is that it's not only entertaining, but also educational. For example, did you know that the very, very, very worst thing you can tell your daughter when she finds you sleeping with a married neighbor is: "I know you think you saw something. I was comforting Mrs. Rosen. She was very upset. It’s very complicated." Well, you do now!
"The Walking Dead" — Daryl kills zombie Merle
In a show filled with death (and undeath), it's the relationships that get us through the episodes. So when Daryl finally reunites with his brother, Merle, only to find he's become a walker, well, that's something of a blow. Especially because it means his brother has been killed, and he'll have to kill him again.
[Related: 'Walking Dead' Season 4 Poster Revealed]
Norman Reedus, who plays Daryl, said in an interview with Entertainment Weekly that he used a Willie Nelson song that reminded him of his father's death to get him into the right state to do the scene: "I just wanted to be crushed in a way you see my heart break. I wanted to curl into a little ball and be a little kid right there."