Big Bang Theory (8pm, CBS) - Sheldon is excited when he hires Professor Proton (Bob Newhart), the host of his favorite childhood TV program, to appear at his apartment.
Beauty and the Beast (9pm, CW) - Cat invites Gabe to a remembrance event her family holds annually for her mother, and Cat uncovers info that makes her question whether her mom is really dead.
Grey's Anatomy (9pm, ABC) - Bailey refuses to accept help from her colleagues, and Owen worries that Ethan will land in foster care.
Parks and Recreation (9:30pm, NBC) - In the Season 5 finale, Leslie celebrates her first year as a city councilwoman, and Andy calls her alter ego, FBI agent Burt Macklin, out of retirement to help with an investigation. Elsewhere, April receives life-changing news and Tom considers a big business opportunity. This better not be a series finale!
Hannibal (10pm, NBC) - This episode, dubbed the "Silence of the Lambs" episode, centers on Hannibal Lecter's bad deeds and on an imprisoned killer (played by Eddie Izzard) who tries to take credit for them.
Scandal (10pm, ABC) - The mole investigation leads to a surprising finding. Meanwhile, Fitz wants Jake to keep safeguarding Olivia, and Mellie's actions force Cyrus to deal with crisis management.
Undocumented (2am, UNC-TV) - DVR Alert: An Independent Lens film on undocumented immigrants who died while crossing the border between Mexico and Arizona, featuring medical examiners who work to identify their remains and Border Patrol agents who balance law enforcement with saving lives.