The Office
Michael and Jan throw a dinner party, complete with an ill-fated game of Celebrity. Jim and Pam are doing well; Angela and Andy get together and are "like a very old preppy couple from the get-go," according to executive producer Greg Daniels. Meanwhile, Dwight — who is incredibly upset over the Angela/Andy pairing — sues some neighborhood kids in small-claims court after an agricultural dispute. Outside of Scraton, Ryan is joined by Michael and Dwight for a night of NYC clubbing: "Have you been clubbing in New York recently?" asks Daniels. "Neither has Michael. It's really not his world."

Desperate Housewives
Katherine and Bree put aside their differences and launch a catering business together. Gabby learns Carlos was permanently blinded in the tornado, but not before he tricks her into remarrying him. Bree and Orson continue living with Susan, and Orson eventually reveals his part in the accident that put Mike in a coma back in the second season. The ladies shun Edie when they incorrectly assume she's slept with one of the husbands. Lynette's crush, Rick, returns to cause more problems in her marriage. And in the two-hour finale: Katherine's secrets are revealed, and there's a huge twist ending that's "going to change the whole series," promises executive producer Marc Cherry.

30 Rock
Jack and rival Devon will renew their battle to become the successor to CEO Don Geiss. Devon's wedding to Geiss' daughter Kathy is "increasingly imminent," explains creator Tina Fey, but we won't see the wedding: "His bachelor party is in an episode. We're trying to save the money — weddings are superexpensive." And Liz will reconnect with two exes: First Dennis, then Floyd, who fled to Ohio last season but makes a return: "The idea is that in the age of global warming there is an April blizzard and Floyd is on a business trip [in New York]," says Fey. "He calls Liz to ask, 'Can I stay with you?'" Also: Liz has a pregnancy scare.

Grey's Anatomy
George will move toward becoming the man that Bailey named her baby after with the help of the Chief, who takes George under his wing. Christina has her own professional crisis over being Hahn's resident, and Ava/Rebecca will return for three episodes. Also returning is Addison, because "there are a couple of surgeries only she can perform," says executive producer Shonda Rhimes. Her visit will be significant for a lot of the characters, particularly Addison. And although Rose returns for five episodes, Meredith and McDreamy will be getting together for good.

Gossip Girl
The biggest headline of the next five episodes is the Blair-Jenny power struggle. Look for the newly manipulative Jenny to even attempt to seduce Nate — but he finds comfort in resident outcast Vanessa. Meanwhile, Serena once again shows her rebellious side. Creator Josh Schwartz promises five explosive episodes, courtesy of newcomer Georgina Sparks, a visitor from Serena's past who reveals the true reason why Serena left town. (Hint: It wasn't because she slept with Blair's ex-boyfriend Nate.)