8 p.m., ABC
It's not really Christmas until the Peanuts gang puts on its annual holiday pageant and Charlie Brown complains about excess commercialism. Happy Christmas, everyone!
8 p.m., CBS
The guys enter a costume contest dressed as members of the Justice League—and ask Penny’s (Kaley Cuoco
) new boyfriend, Zack (Brian Smith
) to join in on the fun.
Season 4 finale, 9 & 10 p.m., USA
What better way to end the season than with two new episodes? In the first, Brennen (Jay Karnes
) attempts to blackmail Michael (Jeffrey Donovan
) into killing government agents. In the second, Michael must protect his family and friends from a tactical-assault team. Doesn’t this guy ever get a day off?
Series premiere, 10 & 10:30 p.m., A&E;
This new reality series is produced by Ice-T and follows South Central Los Angeles gang mediator Malik Spellman. We expect it to be enlightening... and very intense.
10 p.m., FX
It’s time for A Very Sunny Christmas
! In this one-hour special, the gang tries to find the joy of Christmas with the help of naked elves, stolen toys, and childhood videos.
10 p.m., TBS
The Funniest Commercials of 2010
Isaiah Mustafa (yes, the Old Spice guy) hosts this special program highlighting the most hilarious TV ads of the year. Here’s hoping they include our favorite—AllState's Mr. Mayhem!
Also on the airwaves...
$#*! My Dad Says, 8:30 p.m., CBS
The Real Housewives of Beverly Hills, 10 p.m., BRAVO
NBA Basketball: Hawks v. Celtics, Spurs v. Nuggets
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom