(ALL TIMES ET)

8PM | NBC
Chuck – This is the episode that would have served as the season finale (and potentially even a series finale) had NBC not picked up 11 more episodes for the fourth season. As such, “Chuck Versus the Push Mix” wraps up several ongoing storylines, as Sarah (Yvonne Strahovski) tries to, once and for all, thwart the evildoing Volkoff (guest star Timothy Dalton) and save Mama Bartowski (guest star Linda Hamilton) in the process. Chuck (Zachary Levi), meanwhile, teams up for a mission with Morgan (the scene-stealing Joshua Gomez), Casey (Adam Baldwin) spends quality time with his daughter (and Morgan’s GF) Alex and Captain Awesome (Ryan McPartlin) continues to fret about the impending birth of his baby. Chuck co-creator Josh Schwartz told Hitfix.com that this episode ends with the “best 10 minutes in the show’s history,” which I’m guessing/hoping means a Sarah/Chuck wedding and/or the birth of Baby Awesome.

9AM | CHECK LOCAL LISTINGS FOR CHANNEL
Live With Regis and Kelly – Why is Live celebrating Twitter Week? Because that’s how long it’s going to take Regis to learn how to use it. Really. But it’ll all be worth it when he can Tweet about himself in the third person.

8PM | ABC
The Bachelor – Three more bachelorettes are kicked to the curb, but hey, at least they get to see the Viva ELVIS show in Vegas first.

8PM | ABC FAMILY
Pretty Little Liars – Ezria tries to go on a date. In public. That can’t end well.

9PM | DISCOVERY
American Chopper: Senior vs. Junior – Nope, it still hasn’t sunk in to the Teutuls that, business-wise at least, they were much better off as a team. In tonight’s escalating family drama, rumors swirl that someone at PJD is about to be fired and that OCC is facing foreclosure.

9PM | TLC
Cake Boss – Is it extra stressful for a chef to make food for another chef? We’ll find out in the season four premiere, as Buddy is tasked with baking a cake for Rachael Ray.

9PM | LIFETIME
Taken From Me: The Tiffany Rubin Story – Ripped from today’s headlines! Actually, 2008’s headlines: the fact-based story of a Queens schoolteacher (Taraji P. Henson) who plays super spy to rescue her young son after he’s kidnapped by her ex-husband and taken to South Korea

10PM | THE HUB
Happy Days – It’s such a classic that it later became the soundtrack for an aspirin commercial, and tonight, The Hub airs “Potsie Quits School,” the episode in which Potsie Webber pens the catchy tune “Pumps Your Blood” so he won’t fail his anatomy exam. “Pump, pump, pump, pump, pump, pump, pump, pump, pumps your blood …”

10PM | TV ONE
Way Black When – Beginning tonight, and throughout Black History Month in February, the nightly series (Monday through Friday) takes a look at black pop culture through the ’70s, ’80s and ’90s, from Shaft and The Flip Wilson Show to Ginuwine and Mint Condition, hosted by Sinbad, Niecy Nash and Christopher “Kid” Reid, plus guests like Paul Mooney, Antonio Fargas, Todd Bridges, Johnny Gill, Tatyana Ali, Jody Watley and Bobby Brown.

11PM | COMEDY CENTRAL
The Daily Show – Bill Gates in the hizzy.

Worth flipping to during commercials:
– It’s the premiere of Martha Bakes on the Hallmark Channel (11AM), Martha Stewart‘s daily TV equivalent of a “Baking 101” class;
– On The View (11AM, ABC), Camille Grammer continues to pretend not to understand why everyone hates her;
– If anyone can make couponing sound fun, it’s Nate Berkus on today’s Nate Berkus Show (check local listings for time and channel);
– Heavy (10PM, A&E) follows the story of a woman who gained weight after a series of personal tragedies left her turning to food for comfort;
– Rickety Cricket is introduced – and begins his downward spiral – in the “The Gang Exploits a Miracle” episode of It’s Always Sunny in Philadelphia on Comedy Central (9:30PM);
– Back-to-back Pawn Stars episodes (10 and 10:30PM, History Channel) find Rick and the gang trying to price life-size Star Wars figures, a 1763 Stradivarius violin and a 450-year-old book that once belonged to Isaac Newton;
– Amy Poehler visits Conan (11PM, TBS);
– And, be warned, we’re about to be bombarded with The Biebs, beginning with tonight’s Justin Bieber guest spot on The Late Show With David Letterman (11:35PM, CBS).

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• Tags: American Chopper: Senior vs. Junior, Chuck, Regis Philbin Twitter, Teutuls, Tiffany Rubin Story, TV Picks, Way Black When TV One