Saturday on TV
NBA playoffs: Heat at Wizards (6 p.m., Ch. 4)
MLS soccer (7:30 p.m., Fox Soccer Channel — which is available only to digital cable and satellite subscribers): Los Angeles Galaxy at Real Salt Lake
Shrek 2 (8 p.m., HBO): Good 2004 animated sequel. (PG)
Alien Planet (9 p.m., Discovery): Speculation and whiz-bang special effects combine to show us what life might look like on another planet.
Tracey Ullman: Live & Exposed (9:30 p.m., HBO): Ullman recounts her life by becoming a slew of characters in this humorous special.
MAD TV (10:30 p.m., Ch. 13): Ryan Reynolds guest stars.
Saturday Night Live (10:30 p.m., Ch. 30): Will Ferrell hosts; Queens of the Stone Age are the musical guests.
Sunday on TV
NBA playoffs: Pistons at Pacers (1:30 p.m., Ch. 4); Spurs at Sonics (5 p.m., TNT); Suns at Mavericks (7:30 p.m., TNT)
Extreme Makeover: Home Edition (6 p.m., Ch. 4): A widow with three toddlers gets help in this two-hour episode.
King of the Hill (6 p.m., Ch. 13): Hank and the guys try to save Bill from a chorus. (Season finale)
Malcolm in the Middle (6:30 p.m., Ch. 13): Lois enters a beauty pageant. (Season finale)
Survivor: Palau (7 p.m., Ch. 2): Somebody will win a million dollars in the two-hour season finale. And then all the contestants will talk about what happened in the Survivor: Palau Reunion (9 p.m., Ch. 2)
Dateline (7 p.m., Ch. 5): A report on dangerous roads.
The Simpsons (7 and 7:30 p.m., Ch. 13): The season ends with a pair of first-run episodes. First, Ned Flanders moves away and Homer has to beg him to come back. Then it's the episode Fox postponed because of the death of the pope — and with good reason. Catholic jokes abound in an episode titled "The Father, the Son and the Holy Guest Star," as Bart is sent to Catholic school, is befriended by a priest (Liam Neeson) and decides to join the faith. Of course, there are plenty of jokes about Protestants, Jews and people in general, too.
Charmed (7 p.m., Ch. 30): A classmate is brutally killed in front of Phoebe and comes back from the dead to blame her.
King Tut's Final Secrets (7 p.m., National Geographic Channel): New technology is applied to previous finds.
Desperate Housewives (8 p.m., Ch. 4): Susan reunites with Mike; Gabrielle leaves Carlos; Rex has a health crisis.
Law & Order: Criminal Intent (8 p.m., Ch. 5): A former police bigwig is tied to a murder.
Mystery! (8 p.m., Ch. 7): Part 1 of the Miss Marple mystery "What Mrs. McGillicuddy Saw."
Grey's Anatomy (9 p.m., Ch. 4): Meredith wants to know more about Derek.
Crossing Jordan (9 p.m., Ch. 5): Macy is accused of covering up evidence. (Season finale)