This weekend on TV

NBA playoffs: Wizards at Cavaliers (1 p.m. Ch. 4); Kings at Spurs (3:30 p.m., ESPN); Bulls at Heat (6 p.m., ESPN); Nuggets at Clippers (8:30 p.m., ESPN)

Auto racing (6 p.m., Ch. 13): NASCAR's Subway Fresh 500

MLS soccer (6:30 p.m., Ch. 5): Real Salt Lake at Houston Dynamo

Something's Gotta Give (8 p.m., Ch. 2): Jack Nicholson and Diane Keaton star in this 2003 romantic comedy.

Elizabeth I (9 p.m., HBO): Helen Mirren stars in this great two-parter. (Concludes Monday.)

Sunday on TV

NBA playoffs: Pacers at Nets (11 a.m., TNT); Lakers at Suns (1:30 p.m., Ch. 4); Bucks at Pistons (5 p.m., TNT); Grizzlies at Mavs (7:30 p.m., TNT)

Dateline (6 p.m., Ch. 5): What if the avian flu caused a pandemic?

Malcolm in the Middle (6 p.m., Ch. 13): Malcolm fights against the prom.

King of the Hill (6:30 p.m., Ch. 13): Strickland tries to make work fun.

The West Wing (7 p.m., Ch. 5): Sam Seaborn (Rob Lowe) is back, and Josh wants him to be the deputy chief of staff in the new Santos administration.

The Simpsons (7 p.m, Ch. 13): The Simpsons retell the sea tales of the Mayflower, the Bounty and the Poseidon.

Charmed (7 p.m., Ch. 30): Coop realizes he has fallen for Phoebe.

Desperate Housewives (8 p.m., Ch. 4) and Grey's Anatomy (9 p.m., Ch. 4): These hours catch you up on what's happened so far this season.

Law & Order: Criminal Intent (8 p.m., Ch. 5): Murders are tied to voodoo.

Masterpiece Theatre (8 p.m., Ch. 7): In "Under the Greenwood Tree," a British schoolmistress is courted by three men.

Crossing Jordan (9 p.m., Ch. 5): A woman believed to be a miracle worker and living saint is murdered.

The Sopranos (10 p.m., HBO): Christopher and Little Carmine pursue a new venture.

Big Love (11 p.m., HBO): Roman answers Bill's proposal; Barb uncovers Nicki's secret.