Today on TV

The Prisoner (6 and 8 p.m., AMC): Part 2 of 3. Concludes Tuesday.

NFL (6:30 p.m., ESPN): Ravens at Browns.

How I Met Your Mother (7 p.m., Ch. 2): Barney jumps back into the dating scene.

Dancing With the Stars (7 p.m., Ch. 4): The remaining contestants perform.

Heroes (7 p.m., Ch. 5): Samuel discovers just how powerful he can become.

House (7 p.m., Ch. 13): House is reinstated as head of diagnostics just in time to diagnose a porn star.

Accidentally on Purpose (7:30 p.m., Ch. 2): Zack is jealous when Billie starts dating a new guy.

Two and a Half Men (8 p.m., Ch. 2): Tricia Helford ("Battlestar Galactica") guest stars as Chelsea's college roommate, who's getting over a bad breakup.

Trauma (8 p.m., Ch. 5): A boat crashes into a wedding.

Lie to Me (8:01 p.m., Ch. 13): In a ripped-from-the-headlines plot, Loker investigates a deadly stampede at an electronics store on the day after Thanksgiving.

Gossip Girl (8 p.m., Ch. 30): Jenny agrees to do Chuck a favor.

Big Bang Theory (8:30 p.m., Ch. 2): Penny hurts herself, and with Howard, Leonard and Raj out of town, she has to rely on Sheldon for help.

CSI: Miami (9 p.m., Ch. 2): An auto accident reveals the secrets of both drivers.

Castle (9:02 p.m., Ch. 4): An assistant district attorney is murdered.