8 p.m., NBCDanny Pudi) and Jeff (Joel McHale) invite a Greendale loner (guest star Charley Koontz) to play Dungeons & Dragons with the study group—but they exclude Pierce (Chevy Chase) from the fun.
8 p.m., CWNina Dobrev) is in for an unpleasant surprise when her father, John Gilbert (David Anders), pays a visit to Mystic Falls. Plus, Tyler (Michael Trevino) learns that Caroline (Candice Accola) and the other vampires may be responsible for his uncle’s death.
9 p.m., CBSMarlee Matlin guest-stars as Grissom’s (William Petersen) ex-girlfriend, a professor with connections to the death of a deaf-scholarship foundation director.
9 p.m., FOXAlby Grant may've had something to do with it.
9:30 p.m., NBCWill Forte) complicates Leslie’s (Amy Poehler) plans to bury a time capsule for the city. Plus, Andy (Chris Pratt) asks Ron (Nick Offerman) for advice on winning April (Aubrey Plaza) back.
10 p.m., FXJessica Walter) sells ISIS to rival agency ODIN—and ends up falling for the boss, played by Walter's former TV husband, Jeffrey Tambor.
Also on the airwaves...
Wipeout, 8 p.m., ABC
The Big Bang Theory, 8 p.m., CBS
American Idol, 8 p.m., FOX
$#*! My Dad Says, 8:30 p.m., CBS
Perfect Couples, 8:30 p.m., NBC
Grey’s Anatomy, 9 p.m., ABC
The Office, 9 p.m., NBC
Nikita, 9 p.m., CW
Royal Pains, 9 p.m., USA
Private Practice, 10 p.m., ABC
The Mentalist, 10 p.m., CBS
30 Rock, 10 p.m., NBC
Beyond Scared Straight, 10 p.m., A&E;
Ace of Cakes, 10 p.m., FOOD
Jersey Shore, 10 p.m., MTV
Fairly Legal, 10 p.m., USA
Outsourced, 10:30 p.m., NBC
NBA Basketball: Heat v. Magic, Spurs v. Lakers
NCAA Men’s Basketball: Michigan v. Ohio State, Georgia Tech v. Miami, Wofford v. College of Charleston, Murray State v. Tennessee State, Notre Dame v. DePaul, Tennessee v. Auburn, Gonzaga v. Portland, Pacific v. UC Santa Barbara
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom