This weekend on TV

Saturday on TV

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

Horse racing (2 p.m., Ch. 5): The Kentucky Derby. NBC is planning three hours of coverage for an event that lasts about two minutes. The race itself is scheduled to begin at 4:24 p.m.

College softball (2 p.m., BYUTV): New Mexico at BYU

College baseball (5 p.m., CBS C): TCU at Utah

MLS (7 p.m., Ch. 2.2): Toronto FC at Real Salt Lake

Doctor Who (7 and 10 p.m. BBC America): The Doctor and Amy travel back to World War II and meet Winston Churchill.

Sunday on TV

NBA playoffs: If the Jazz lost to the Nuggets on Friday night, the seventh and final game of their first-round playoff series will be played today. Check today's sports section for more information.

60 Minutes (6 p.m., Ch. 2): Conan O'Brien gives his first interview since he worked out a deal to leave NBC. Oh, and he's contractually prohibited from disparaging NBC or Jay Leno, so that should take a lot of the fun out of it.

Amazing Race (7 p.m., Ch. 2): The final four teams struggle with the language barrier in Shanghai.

The Simpsons (7 p.m., Ch. 13): After a radiation leak at the nuclear power plant, city officials suspend civil liberties.

Cold Case (8 and 9 p.m., Ch. 2): The team investigates the 1989 death of a prom queen; Jeffries tries to close a case he's been investigating for 17 years. These are the last episodes of the seventh season — and CBS has yet to announce whether there will be an eighth season.

Desperate Housewives (8 p.m., Ch. 4): Angie comes face to face with her ex, Patrick Logan (guest star John Barrowman); Lynette sees Eddie's dark side; Bree meets a woman who knows about Sam's dark past.

Masterpiece Mystery! (8 p.m., Ch. 7): In "Foyle's War, Series VI: The Russian House," Foyle tries to track down an escaped Russian POW.

Breaking Bad (8, 9:02 and 11 p.m., AMC): Skyler pressures Walt to make a deal.

Army Wives (8 and 11 p.m., Lifetime): Pamela considers her options about divorcing Chase.

Brothers & Sisters (9 p.m., Ch. 4): Sarah struggles with her son; Justin struggles with school; and Kevin struggles with unemployment.

The Pacific (10 p.m., HBO): Basilone convinces the Marines to send him back into combat.

The Tudors (10 p.m., Showtime): The queen's ex-lover blackmails her.

Kirstie Alley's Big Life (11 p.m., A&E): A visitor shakes things up.

Treme (11 p.m., HBO): Antoine visits his sons in Baton Rouge; LaDonna and Toni probe a case of mistaken identity.