Stargate Universe | 9pm on SyFy

Lt. Scott and Camile Wray use the communication stones to visit Earth; the crew discovers a piece of ancient technology that carries a promise of a way home.

Grey’s Anatomy | 9pm on ABC

As the holiday season passes, Miranda is visited by her father, who disapproves of her life choices; Mark and Lexie must cope with the arrival of a woman from his past; Thatcher questions the chief’s recent behavior.

Glee | 9pm on Fox

Mr. Schuester has glee club split up into pairs to sing their favorite ballads; Will winds up in a sticky situation when he is forced to step in for a sick student; Finn has dinner with Quinn’s parents.

Gossip Girl | 9pm on The CW

Blair tries to impress students at NYU with a private Lady Gaga concert; Serena turns to Nate for support during a difficult situation; Jenny agrees to do a favor for Chuck.[GMMR: Get a sneak peek of Lady Gaga on GOSSIP GIRL.]

The Prisoner | 8pm on AMC

A reworking of the 1960s cult hit about an amnesiac (Jim Caviezel) held in a mysterious area called the Village, where fellow inhabitants are known only by numbers. First up: Six is found in the desert and taken to the settlement, but he soon realizes something is amiss among its supposedly contented citizens. Ian McKellen [...]

Supernatural | 9pm on The CW

Sam and Dean are tricked into attending a “Supernatural” convention where fans dress up as the brothers. But the entertaining event is soon disrupted by a ghost. [Click here to see a promo for tonight's episode.]

Mad Men | 10pm on AMC

In the third-season finale, Don has a pivotal meeting with Connie (Chelcie Ross); Betty is the beneficiary of some interesting advice; and Pete has a serious sit-down with some clients.