Chuck (8pm, NBC) - Two new episodes tonight close out a great show that a lot of people (but not enough!) will miss. First, Sarah (Yvonne Strahovski, left) keeps a secret from Chuck (Zachary Levi, left) in order to successfully pull off a perilous mission, and Ellie and Awesome are presented with a new and potentially life-changing opportunity. Then Chuck embarks on his final mission in the series finale at 9. He must revisit his past in order to save his future, and teams up with friends, family, and unlikely allies to vanquish the sinister villain Nicholas Quinn. 

Shark Tank (8pm, ABC) - Ideas a cat-portrait business (yes!) and there's a follow-up on a potty-training product for cats (no!) from Season 2.

Fringe (9pm, Fox) - Olivia is preoccupied by a warning from the Observers, while Peter helps with the search for a girl with mysterious powers to see the future.

On Freddie Roach (9:30pm, HBO) - The second episode in this documentary series following boxing trainer Freddie Roach focuses on a routine day at Roach's Wild Crd Gym as it's suddenly thrown into chaos.

Confessions: Animal Hoarding (10pm, Animal Planet) - Tonight's episode features a dog hoarder from Garland, North Carolina, who gets help from the Wake County SPCA. The Vietnam veteran and former minister had 35 dogs chained up around his home, living in some pretty horrible conditions.  Read more about the episode and the Wake SPCA's involvement. Also in this episode, a woman (not from North Carolina) who has more than 100 cats, which have made her current home uninhabitable. Another North Carolina episode airs on February 10.

Portlandia (10pm, IFC) - Michelle and Brendan pull out all the stops to see that their son gains admittance to a prestigious preschool.

Chuck! Chuck! Chuck!

It's the complete second season of the clever NBC show.  That's 22 episodes in a six-disc set featuring the adventurs of Chuck, the nerd who becomes a spy.

Special features include a segment exploring the mythology of Chuck, webisodes, declassified scenes and a gag reel.

There's more but you don't need long explanations. You want Chuck, don't you?

Take him home for the holidays by sending an email by 5 tonight (12/24) with your address in the body. We'll pick, someone will win.

And whether you win or not, have a Merry Christmas.

By the end of last season's outstanding "Chuck" finale, our favorite nerdy-hot sorta-spy Chuck Bartowski (Zachary Levi) had learned that his own father was the elusive Intersect creator Orion, survived an amazing "Mr. Roboto" shoot-out sequence at his sister Ellie's botched wedding, won over his dream girl Sarah, and acquired an Intersect upgrade that turned him into a dynamic Kung Fu master.

All this with the threat of cancellation hanging over his head.

Lucky for us, NBC showed some rare good judgment and gave the show a much deserved third season. Tonight we can see if Chuck's jaw-dropping Intersect upgrade will convert him from the timid -- no, I'll say it -- cowardly government pawn we all knew and loved, into a supremely capable super spy.