House (8pm, Fox) - In tonight's season finale, House's sobriety is on the line after struggling to save a woman crushed under a fallen construction crane.
Chuck (8pm, NBC) - Scott Bakula is back as Chuck's father, who discovers that a new more sophisticated Intersect has been uploaded into Chuck's head. (Not a finale).
Law & Order (9pm, NBC) - Two straight hours of "Law & Order" tonight (it's like NBC can't wait to get rid of the newly-canceled veteran). In the first case, a victim dies from stab wounds and the investigation unveils an exploited family. In the second case, a TV crew from a fashion makeover show find a dead man locked in a dog cage, and the man's wife becomes the prime suspect. The "Law & Order" series finale airs next week.
Big Bang Theory (9:30, CBS) - Leonard tells Penny the story of how he met Sheldon.
Castle (10pm, ABC) - Inn the second season finale, Castle and Beckett investigate the assassination of a covert agent and deal with their feelings for each other. Unfortunately, Detective Demming is still in the picture.
Other finales ... One Tree Hill (8pm, CW) ends season 7 and Gossip Girl (9pm, CW) ends season 3.