Watch it

“Community” (8 p.m., NBC). Season premiere. I’m still not entirely convinced on the merits of this show, but it ended strong last season, so I’ll give it a chance. A new semester starts tonight, with Betty White as a kooky new professor and Senor Chang enrolling as a student.

“30 Rock” (8:30 p.m., NBC). Season premiere. There are major happenings as the fifth season begins: Liz has a new boyfriend (Matt Damon) and Jack is meddling in their relationship; Jack, meanwhile, has settled on a girlfriend (Elizabeth Banks) who’s driving him crazy trying to redecorate his place; Jenna is now a producer on “TGS”; and Tracy is grieving after Kenneth’s firing. And hilarity ensues.

“Fringe” (9 p.m., Fox). Season premiere. There are two universes. And two Olivias. And while one is trapped in bizarro-verse, they other one cozies up to Peter and Walter. This should be good.

“It’s Always Sunny in Philadelphia” (10 p.m., FX). Marriages are failing everywhere: Dennis and Maureen “Dead Tooth” Ponderosa, Charlie and Frank, and Dee, Bill Ponderosa and his wife. Awwww.

“The League” (10 p.m., FX). The guys make up to their wives for ditching them for Vegas, and Ruxin’s creepy brother-in-law Rafi gets appointed designated driver at a party.

Record it

“The Office” (9 p.m., NBC). Season premiere. The gang is back for the final season with Michael Scott. Tonight Michael hires a surly new office assistant and Pam tries to pull a prank. The show slipped noticeably last year, but maybe it can pull a comeback this season.

“Outsourced” (9:30 p.m., NBC). Series premiere. A new sitcom about an American middle manager who gets sent overseas to oversee a call center in India. Culture shock ensues. This could be pretty decent, or it could be really, really bad. And offensive.  Only one way to find out . . .

“Project Runway” (9 p.m., Lifetime). The designers go for a high-fashion look.

“Jersey Shore” (10 p.m., MTV). Snooki ends up in Vinnie’s bed. Again. Eww.

Skip it

“$#*! My Dad Says” (8:30 p.m., CBS). Series premiere. The sitcom based on the Twitter feed. Nope, doesn’t get any deeper than that. William Shatner stars as the grumpy old man. This looks awful, maybe the stupidest new show of the season.

“My Generation” (8 p.m., ABC). Series premiere. This new drama takes the form of a documentary revisiting the Class of 2000, and where they are now. Call it “Facebook: The TV Show.” It looks even more annoying and boring than the real thing.