Today on TV

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

How I Met Your Mother (7 p.m., Ch. 2): The perfect woman (Joanna Garcia) becomes available for Ted.

Santa Claus is Comin' to Town (7 p.m., Ch. 4): This 1970 favorite returns. (R)

Carrie Underwood: An All-Star Holiday Special (7 p.m., Ch. 13): This sort of retro holiday special features guest stars Dolly Parton, Brad Paisley and David Cook, as well as a trip home to visit Underwood's family.

NBA (7 p.m., FSN): Spurs at Jazz

The Closer (7 p.m., TNT): A 12-year-old boy is found dead in a known gang party house.

Accidentally on Purpose (7:30 p.m., Ch. 2): Billie attends parenting classes.

Two and a Half Men (8 p.m., Ch. 2): Charlie learns that Chelsea has been hiding something from him.

Gossip Girl (8 p.m., Ch. 30): A car accident rocks the Upper East Side.

Big Bang Theory (8:30 p.m., Ch. 2): Sheldon tries to help Penny understand Leonard's work.

CSI: Miami (9 p.m., Ch. 2): A census worker is killed.

Castle (9 p.m., Ch. 4): An art dealer is shot to death in his gallery, and evidence goes missing.