NBA basketball: Chicago Bulls at New York Knicks, 6 p.m., TNT; Denver Nuggets at Los Angeles Clippers, 8:30 p.m., TNT; Utah Jazz at Golden State Warriors, Root.

College basketball: Duke at Virginia Tech, 5 p.m., ESPN; Nebraska at Northwestern, 5 p.m., ESPN2; UCLA at Washington, 7 p.m., ESPN; South Carolina at Florida, 7 p.m., ESPN2; Gonzaga at BYU, 9 p.m., ESPN.

The Big Bang Theory (7 p.m., Ch. 2): Leonard starts to reconsider his friendship with Sheldon; Wolowitz tries to choose his astronaut nickname.

30 Rock (7 p.m., Ch. 5): Liz and Jack clash over her contract; Kenneth changes his page assignment; Tracy and Jenna get a job entertaining at a bar mitzvah.

American Idol (7 p.m., Ch. 13): Contest hopefuls try out in St. Louis.

Rob (7:30, Ch. 2): Fixated on learning more about Maggie's past, Rob asks Hector to help him snoop around; Fernando and Rosa stop speaking to each other after a big argument.

Parks and Recreation (7:30 p.m., Ch. 5): Leslie tries to find Ann a date for Valentine's Day; Ben asks Ron to help with the scavenger hunt Leslie sent him on; Chris is upset about his love life.