Martha Stewart's Holiday Open House, 8 p.m., Hallmark: Jennifer Garner and Claire Danes show up at Martha's house. Surprise! She decorated.
SEASON PREMIERE The Sing-Off, 8 p.m., NBC: Engaged to Vanessa Minnillo and hosting another season of competing a cappella groups — it's good to be Nick Lachey.
SEASON PREMIERE Men of a Certain Age, 10 p.m., TNT: Well, we could have told you that Scott Bakula wouldn't have been a good car salesman, although he's quantum leaped into more difficult jobs in the past.
Eureka, 9 p.m., SyFy: An electromagnetic shield traps everyone in town as Allison begins decorating nonstop and giving everyone gifts. It's like a commercial for a shopping mall.
MythBusters, 9 p.m., Discovery: President Barack Obama asks Adam and Jamie to prove or disprove the myth of Archimedes' solar death ray, which was used to set a fleet of invading ships on fire.
Top Chef All-Stars, 10 p.m., Bravo: The perils of stuntcasting judges becomes apparent when Joe Jonas, who is no longer popular at all, asks the cheftestants to make snacks for kids. Here are 100 packets of saltines … knock yourself out.
A Barbara Walters Special: Oprah, The Next Chapter, 9 p.m., ABC: Oh my, whatever will happen to poor Oprah Winfrey now that her talk show is in its last season? She'll only have her own entire network to keep her money warm!
Barbara Walters Presents the 10 Most Fascinating People of 2010, 10 p.m., ABC: Since the cast of Jersey Shore and Justin Bieber are on this list, we have to doubt we'll agree with the other eight.
SEASON FINALE The Good Guys, 9 p.m., Fox: Was it a dine and dash or part of a mob hit? If it involves Chris Klein, we can only assume someone died.
Gold Rush: Alaska, 10 p.m., Discovery: It seems the local bear population doesn't want to see the town of Porcupine Creek resurrected. Send in Sarah Palin — she's always talking like she knows what to do in these situations.
Joshua Gillin, firstname.lastname@example.org