America's Got Talent: The top 10 acts shoot for the final four in this new episode (9 p.m. NBC).
Glee: Guest star Neil Patrick Harris puts his pipes to work in this repeat episode of the hit series (9 p.m. Fox).
Warehouse 13: H.G. Wells' legendary time machine is pressed into service in this new episode (9 p.m. Syfy).
White Collar: The caper drama starring Matt Bomer and Tim DeKay presents its season finale (9 p.m. USA).
100 Greatest Artists of All Time: VH1's countdown of the most important and influential music makers continues with Hour 3 (10 p.m. VH1).
NightlinePrime — Secrets of Your Mind: Why We Do What We Do: The newsmagazine ends its season with a look at the brain's role in eating and weight loss (10:01 p.m. ABC).
Louie: This hilarious but decidedly adult-themed comedy series starring Louis C.K. ends its freshman season with back-to-back episodes (11:13 and 11:44 p.m. FX).
Around the Table: 2010 Season Preview: Get ready for the start of the regular pro football season with this new special featuring analysis from Michael Irvin, Deion Sanders, Marshall Faulk and Steve Mariucci (5 and 9 p.m. NFL).
Saturday Night Fever: John Travolta's got the clothes, the hair and all the right moves in this tune-filled 1977 disco melodrama (8 p.m. Cinemax).
My Trip to Al-Qaeda: Journalist Lawrence Wright explores the shadowy world of the terrorist organization in this new documentary (9 p.m. HBO).
Tennis: The U.S. Open continues in Flushing, N.Y. (8 a.m. and 4 p.m. ESPN2; 8 a.m. Tennis).
Baseball: The White Sox take on the Tigers or the Rays play the Red Sox. (4 p.m. MLB); the Dodgers visit the Padres (7 p.m. KCAL); and the Angels host the Indians (7 p.m. FSN).