Big Bang Theory (8pm, CBS) - Penny asks Leonard to lie to her visiting father, played by Keith Carradine, while Howard, Raj, and Bernadette spend all night looking through a telescope.
Bones (8pm, Fox) - An eccentric candy mogul (Wayne Knight) is under suspicion when human remains are found in the world's largest chocolate bar, but the tale of how they got there is just as puzzling as the victim's mysterious life.
Community (8pm, NBC) - Dean Pelton catches Jeff listing a fake class on his schedule, but then a mysterious professor (Kevin Corrigan) emerges to back up Jeff's claim. Curious about the man, Jeff and Annie investigate. Elsewhere, Abed and Troy build a blanket fort of great proportions.
Grey's Anatomy (9pm, ABC) - Haters will always hate, but "Greys" has hit a nice stride this season, and they've had some really good episodes. Tonight, the attendings go to Joe's to celebrate Derek's clinical trials grant, and are surprised to find a familiar face behind the bar. Meanwhile, Meredith and Alex must deal with a 9-year-old's postsurgical complications and his very demanding mother.
First 48 (9pm, A&E) - A body is found buried in a basement and the person who tipped the detectives could be the killer. Also, a father of three is stabbed to death in Charlotte.
Biography: Billy Joel (10pm, Bio) - A profile of Billy Joel, whose pop classics in the 70s and 80s made him one of the best-selling recording artists in American music history.
Burn Notice (10pm, USA) - A dangerous thief tries to steal a chemical weapon from Venezuelan revolutionaries, forcing Michael to work with his foe to prevent a disaster.