Worth Watching: April 17-23

FRIDAY Now on PBS Global warming and how it could affect national security and water rights. 8:30 p.m. on PBS.

SATURDAY Ashes to Ashes British offering about a cop who ends up back in time in 1981. 8 p.m. on BBC America.

Grey Gardens Spectacular remake of the documentary about Jackie Kennedy Onassis’ cousins, Edith (Jessica Lange) and Edie Beale (Drew Barrymore). The two former doyennes of East Hampton society were “discovered” in the 1970s living in squalor. Sad and fascinating. 8 p.m. on HBO.

Groomer Has It The new gayest show on TV has 12 competing doggy stylists. Tonight, the salon gets trashed. 9 p.m. on Animal Planet.

SUNDAY The No. 1 Ladies Detective Agency Philadelphia’s own Jill Scott stars in this adaptation of the best-selling mystery series set in Africa. 8 p.m. on HBO.

Desperate Housewives Is Edie really biting the dust? As the season finale nears, the residents of Wisteria Lane are revealing secrets. 9 p.m. on ABC.

In Treatment Gabriel Byrne stars in the hit series in which clients have many and varied issues — including LGBT concerns. 9 p.m. on HBO.

The Tudors Tonight, Henry goes back on his word. Starring Jonathan Rhys Meyers as a young and virile Henry in various states of undress. 9 p.m. on Showtime.

Brothers & Sisters Kevin and Scotty consider a proposal from Chad (guest star Jason Lewis). 10 p.m. on ABC.

Tracey Ullman’s State of the Union New season of Ullman’s LGBT-friendly, sex-laden show. 10 p.m. on Showtime.

WEDNESDAY America’s Next Top Model The female/TG models get dressed up and down by Tyra Banks. 8 p.m. on the CW.

New Adventures of Old Christine Lesbian comedian Wanda Sykes. 8 p.m. on CBS.

Better Off Ted Portia de Rossi stars in this new black comedy. 8:30 p.m. on ABC.

American Idol The finalists are being whittled down. 9 p.m. on FOX.

THURSDAY In the Motherhood “Will & Grace” alum Megan Mullally stars in this sitcom that takes a darkly comic look at motherhood. 8 p.m. on ABC.

Parks and Recreation Amy Poehler is at her funniest in this new comedy from the creators of “The Office.” 8:30 p.m. on NBC.

Hell’s Kitchen Only five chefs remain. 9 p.m. on FOX.

Queer TV you can always see

As the World Turns Luke and Noah continue to work on their antidiscrimination project — with Damian’s money. Luke’s friends, the twins Zack (gay) and Zoe (bi), wreak havoc when they Photoshop Damian’s handsome Maltese head on a nearly nude man’s body on the cover of “Playman” magazine. Prepare for Noah to get kidnapped. Monday-Friday, 2 p.m. on CBS.

Guiding Light Natalia and Frank are going to be married. Soon. But Springfield’s bad girl, Olivia, wants Natalia. So far, it seems she’s just doing everything she possibly can to make Natalia realize how comfortable their “roommate” lives are together. Monday-Friday, 10 a.m. on CBS.

Ellen Monday-Friday, 3 p.m. on NBC.

The Rachel Maddow Show Monday-Friday, 9 p.m. on MSNBC.