(ALL TIMES ET)

8PM | NBC – SERIES FINALE
Chuck – The two-hour finale finds Chuck Bartowski going back to his past and relying on all his friends and family members to help secure his future with Sarah, against the evil Nicholas Quinn. Yeah, not expecting a lot of surprises, but at least this once-favorite show got a full five seasons to do its nerdy thing.

8PM | ABC
Shark Tank – There’s a mini-theme going on tonight’s Tank: one entrepreneur pitches a cat portrait business (really), while the show revisits last season’s potty-training for cats business.

9PM | FOX
Fringe – Mystery after mystery: Peter tries to track down a girl with the power to see what will happen in the future.

9PM | SUNDANCE – 2ND SEASON FINALE
Girls Who Like Boys Who Like Boys – Brent attends his mother’s funeral, which, obviously, has a major impact on him.

9PM | PBS
Great Performances: Tony Bennett: Duets II – The special documents the making of Bennett’s Duets II album including performance with Michael Buble, Norah Jones, Willie Nelson, Amy Winehouse and Lady Gaga.

9PM | DIY – 10TH SEASON PREMIERE
Man Caves – Go ahead … make any of the numerous he-should-be-living-in-a-cave post-72-day marriage jokes, but Kardashian ex Kris Humphries gets a man cave bedroom and lounge in tonight’s episode.

10PM | IFC
Portlandia – Michelle and Brendan believe education is the key to success, so they go all out to make sure their son gets one … at a fancy preschool.

10PM | STARZ – 2ND SEASON PREMIERE
Spartacus: Vengeance – Now that the slaves are free, Spartacus begins to feel the full weight of his responsibility as their leader.

10:30PM | IFC
The Increasingly Poor Decisions of Todd Margaret – Todd goes to drown his sorrows at a bar and gets caught up in a bachelorette party. Better than getting caught up in an episode of The Bachelorette, no?

Worth flipping to during commercials:
– Gordo revisits some of the restaurants he’s helped (or has he?) in the past on Kitchen Nightmares (8PM, Fox);
– New America’s Most Wanted (9PM, Lifetime);
– 20/20 (10PM, ABC) unfolds the case of a real-life War of the Roses story, about a Connecticut man who kidnapped his ex-wife, held her hostage and burned down their beach home;
– It’s the fifth season finale of Deadly Women (10PM, ID);
– Back-to-back wedding planning events on Swanderosa (10 and 10:30PM, CMT).

And the late-night line-up:
– The Late Show with David Letterman (11:35PM, CBS): Dolly Parton (REPEAT);
– The Tonight Show with Jay Leno (11:35PM, NBC): Barack Obama (REPEAT);
– Jimmy Kimmel Live (12:05AM, ABC): Meryl Streep (REPEAT);
– Late Night with Jimmy Fallon (12:35AM, NBC): Daniel Radcliffe (REPEAT);
– The Late Late Show with Craig Ferguson (12:37AM, CBS): Craig heads to the Moulin Rouge (REPEAT);
– Last Call with Carson Daly (1:35AM, NBC): Lupe Fiasco (REPEAT).