Lawman

Steven Seagal Lawman
10/9c A&E
His movies have grossed more than $2 billion worldwide. But for the past 20 years,  he's also been a cop. Steven Seagal made his action-hero debut in 1988's Above the Law and became known on screen as an enforcer with martial-arts skills and a passion for doing the right thing. In this new reality show, viewers see Seagal as, well, an enforcer with martial-arts skills and a passion for doing the right thing. The series follows his work as a deputy sheriff in Louisiana and begins with Seagal and his team apprehending a carjacker. — Bill Ecklund

Christmas in Rockefeller Center
8/7c NBC
Hosts Jane Krakowski and Zachary Levi flip the light fantastic at the 77th annual lighting of the famed Christmas tree in Manhattan. It's beginning to sound a lot like Christmas when slated performers Michael Bublé, Aretha Franklin, Alicia Keys, Barry Manilow, the Roots and Shakira render holiday tunes and current hits. Also illuminating the event are appearances by newsman Brian Williams and actors Taylor Schilling and James Tupper, both of NBC drama Mercy. — Dean Maurer

Grammy Nominations Concert Live! — Countdown to Music's Biggest Night
9/8c CBS
Several key 2010 Grammy nominations are announced on this music-filled special hosted by LL Cool J. But the nods may take a backseat to what promises to be tomorrow's leading chatter on the social-networking sites: the debut of Nick Jonas and the Administration, the youngest JoBro's new band, performing "Who I Am." Other top acts on tap: the Black Eyed Peas; Sugarland; and Maxwell. — Tim Holland

Top Chef: Las Vegas
10/9c Bravo
The tension is piping hot in Part 1 of the two-part Season 6 finale, whetting all appetites for next week's crowning of the winning chef. The scene shifts from Sin City to Napa Valley, Calif., where the four remaining contestants try to seal the deal with an ideal meal in the penultimate challenge. Stepping up to the plate (and sporting interesting new hairstyles) are Kevin Gillespie, Jennifer Carroll and the Voltaggio brothers — serious Bryan and cocky Michael — who are taking sibling rivalry and scrambled egos to the next level. — Dean Maurer

Nip/Tuck
10/9c FX
Christian and Kimber: It's a relationship that just won't die. Or live. Two weeks ago she was engaged to Mike Hamoui; last week she wasn't, and guess who was back in the picture. For how long? How long do you think? Sleeping with your grandchild's mother is creepy anyhow. On the Sean front, meanwhile, there finally appears to be some light at the end of the Teddy tunnel. — Paul Droesch