The Big Bang Theory: Sheldon and his nemesis (John Ross Bowie) compete for an office in this new episode (8 p.m. CBS).
American Idol: The judges continue to narrow down the contestants in this two-hour episode (8 p.m. Fox).
The Office: Dwight (Rainn Wilson) arrives in Tallahassee and gets busy trying to impress Nellie Bertram (Catherine Tate) in this new episode (9 p.m. NBC).
Grey's Anatomy: In a crossover with spinoff series "Private Practice," Derek's (Patrick Dempsey) sister (Caterina Scorsone) comes to Seattle Grace in this new episode (9 p.m. ABC).
Project Runway All Stars: The contestants are asked to create a costume for the musical "Godspell." Composer Stephen Schwartz ("Wicked") delivers the challenge (9 p.m. Lifetime).
Up All Night: Alanis Morissette guest stars in this new episode as a woman who used to be in a band with Ava (Maya Rudolph) and is getting married and wants Ava to officiate at the ceremony (9:30 p.m. NBC).
The Mentalist: Morena Baccarin returns as a killer whom Patrick (Simon Baker) helped put away but arranges for her to be furloughed from prison to help him solve the murder of a charity worker in this new episode (10 p.m. CBS).
Remembering Whitney: This new special recalls a 2009 interview in which the singer discussed her marriage, drug abuse and retreating from the spotlight (9 p.m. OWN).
Exporting Raymond: The hit sitcom "Everybody Loves Raymond" gets caught in a culture clash in this 2011 documentary (8 p.m. HBO).
College basketball: Wisconsin at Michigan State (4 p.m. ESPN); Arizona at Washington State (6 p.m. FS Prime); Gonzaga at Santa Clara (8 p.m. ESPN2); Arizona State at Washington (8 p.m. FS Prime).
Hockey: The Phoenix Coyotes visit the Kings (7:30 p.m. FSN).