Thursday's TV Highlights: 'Community' on NBC
Community: In the opener of a two-part season finale, the students of Greendale celebrate the end of the school year with another paintball game. This time it's supposed to be a fun. “Lost's” Josh Holloway guest stars (8 p.m. NBC).
American Idol: Jennifer Lopez performs with Pitbull in a results episode that also features a performance by Lady Antebellum (8 p.m. Fox).
The Mentalist: When a prison guard is stabbed to death, Patrick (Simon Baker) suspects one of the victim's charges and Rigsby (Owain Yeoman) thinks his own father (William Forsythe) might know something about the case. Robin Tunney and Tim Kang also star in this new episode (10 p.m. CBS).
30 Rock: Now that “TGS” has wrapped for the summer, Liz (Tina Fey) is looking forward to relaxing in the Hamptons, but her low-stress getaway is interrupted when Tracy (Tracy Morgan) moves in next door in the season finale (10 p.m. NBC).
The War Boys: Three young men steal a truck that they think contains black-market television sets, but things go awry in this 2009 drama starring Benjamin Walker, Victor Rasuk, Brian J. Smith and Peter Gallagher (8:25 p.m. Showtime).
Precious Life: This 2010 documentary tells the story of a 4-month-old boy, a Palestinian from Gaza, who was born without an immune system and needed a bone marrow transplant, which was available only in an Israeli hospital (8:30 p.m. HBO).
Baseball: The Angels visit the Boston Red Sox (10:30 a.m. FSN).
Hockey: NHL playoffs: The Vancouver Canucks visit the Nashville Predators (5:30 p.m. VS).