Thursday on TV

NBA playoffs (6 p.m., TNT): Cavaliers at Celtics.

College baseball (6 p.m., BYUTV): San Diego State at BYU.

Survivor: Heroes vs. Villains (7 p.m., Ch. 2): It's the second-to-last episode of the season — a winner will be declared in the two-hour season finale on Sunday.

FlashForward (7 p.m., Ch. 4): Mark tries to protect Gabriel.

Community (7 p.m., Ch. 5): There's a shocking revelation about Señor Chang.

Parks and Recreation (7:30 p.m., Ch. 5): Rob Lowe guest stars as a state auditor. And, yes, Lowe is leaving "Brothers & Sisters" at the end of the season and joining the cast of this show.

Bones (7 p.m., Ch. 13): The team works overtime to make sure the Gravedigger is convicted.

Vampire Diaries (7 p.m., Ch. 30): Alaric and Damon try to prevent Johnathan from setting his deadly plan in motion. (Season finale)

MLS (7 p.m., ESPN2): Houston Dynamo at Real Salt Lake.

CSI (8 p.m., Ch. 2): Langston is accused of being involved in the Dr. Jekyll murders.

Grey's Anatomy (8 p.m., Ch. 4): Karev treats a troubled teen (guest star Demi Lovato).

The Office (8 p.m., Ch. 5): Michael gets bad news about Donna.

Fringe (8 p.m., Ch. 13): Olivia travels to the parallel universe with Walter.

Supernatural (8 p.m., Ch. 30): Sam and Dean make a devastating decision.

30 Rock (8:30 p.m., Ch. 5): Liz tries to reignite an old flame.

The Mentalist (9 p.m., Ch. 2): Patrick runs up against a supposed psychic during a murder investigation.

Private Practice (9:01 p.m., Ch. 4): An unexpected death stuns everyone. (Season finale)

The Marriage Ref (9 p.m., Ch. 5): Bette Midler and Howie Mandel are celebrity panelists.