8 p.m., CBSJason Segel) and Lily (Alyson Hannigan) get some shocking news, Robin (Cobie Smulders) finds a new job, and Ted (Josh Radnor) prepares to be Punchy’s best man at his wedding. Plus, Alex Trebek guest-stars.
9 p.m., ABC
Mariah Carey: Merry Christmas to YouSupreme diva Mariah Carey sings songs from her new holiday album, “Merry Christmas II You.” And no one belts out a Christmas carol like Mariah.
9 p.m., CBSCharlie Sheen) pays a visit to his psychiatrist (and the best part of the whole show), Dr. Freeman (Jane Lynch), after he and Courtney (Jenny McCarthy) break up. I hope she shows him a little bit of that Sue Sylvester sass.
Season 10 premiere, 9 p.m., A&E;
10 p.m., TNTRay Romano) tries to re-work his schedule to fit in more rounds of golf, Owen (Andre Braugher) has a tough time balancing his new job responsibilities with his home life, and Terry’s (Scott Bakula) co-workers use some old commercial footage to play a prank on him. It’s tough being a middle-aged dude.
Also on the airwaves...
Skating with the Stars, 8 p.m., ABC
The Sing-Off, 8 p.m., NBC
Rules of Engagement, 8:30 p.m., CBS
The Closer, 9 p.m., TNT
Cake Boss: Next Great Baker, 9 p.m., TLC
Mike & Molly, 9:30 p.m., CBS
Hawaii Five-0, 10 p.m., CBS
Hoarders, 10 p.m., A&E;
Tabatha’s Salon Takeover, 10 p.m., BRAVO
Fabulous Cakes, 10:15 p.m., TLC
NFL Football: Ravens v. Texans
NHL Hockey: Kings v. Red Wings
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom