Gannett News Service

Must-see

The Crash of Flight 191, 8 p.m., History Channel.

Just 31 seconds after a plane took off in Chicago on May 25, 1979, it crashed. All 271 people on board were killed, along with two others on the ground. Now, two days after the 25th anniversary, we get a richly detailed summary. We see how investigators leaped to the wrong conclusion, then learned key lessons about maintenance. We get the human stories of the survivors' families. We also get strong commentary from travel reporter Peter Greenberg.

Worth watching

Pepsi Smash, 8 p.m., Channels 64, 26. For the second summer, WB offers high-energy rock and pop concerts. That starts tonight with Lenny Kravitz hosting. Other performers include Big Boi (from Outkast), Limp Bizkit, Hoobastank and Counting Crows.

Friends, 8 p.m., Channels 5, 22. The season is officially over now and NBC is juggling reruns to hold our interest. It has three "super-sized" ones tonight, but not the ones it had originally scheduled. For Friends, we get the season-opener, set at an island resort.

Ross and Rachel definitely weren't back together then. In one room, Ross was kissing Charlie (Aisha Tyler); in another, Rachel was kissing Joey. In between, their friends were eavesdropping. There's much more, including Mike's return and Monica's ultra-bad hair day.

Joan of Arcadia, 8 p.m., Channels 12, 7. Here's a transplanted rerun of a solid Friday series. Joan is a teenager who gets messages from God (taking various human forms). Tonight, she's told to take a tough guy to the school dance; her parents aren't happy about this.

Queen For a Day, 8 p.m., Lifetime. In 1955, this show started listening to women's sad stories, then giving prizes to one of them. Now a more upbeat version debuts, with comedian-actress Mo'Nique (The Parkers) as host.

Will & Grace, 8:40 p.m., Channel 5, 22. Will and Jack wake up in bed, naked. Neither can recall how they got there.

CSI: Crime Scene Investigation, 9 p.m., CBS. A man has apparently been killed during jury deliberations.

Frontline: The Way the Music Died, 9 p.m. Channel 48; 10 p.m. Channel 16. In just three years, this documentary says, the music business' annual gross has fallen from $40 billion to $28 billion. Frontline blames lots of factors, from Internet theft to the blandness that followed media consolidation.

Scrubs, 9:20 p.m., Channels 5, 22. Sean (Scott Foley) hasn't yet told Elliot that he won't see her for the next six months, because of an out-of-country job.

ER, 10 p.m., Channels 5, 22. This continues the story of the friendship between Susan and a man (Bob Newhart) who is losing his sight.