Critic's corner

By Matthew Gilbert

PICKS FOR MARCH 24-25, 2007

Saturday Night Live 11:30 p.m., Channel 7
Peyton's manning the show.

Gene Simmons Family Jewels Sunday at 9 p.m., A&E
Gene comes out of his half-dreamed dream for season 2.

The L Word Tomorrow at 10 p.m., Showtime
Tina's back in. Someone must be raking in the toaster ovens.

Natural History

Planet Earth

Tomorrow at 8 p.m., Discovery Channel
Sigourney Weaver hosts this 11-part series about the various habitats and wildlife on our planet. Episodes will take detailed and picturesque looks at mountain ranges, deserts, jungles, forests, and caves, as well as the animals that inhabit them.

Grease: You're the One That I Want Sunday at 8 p.m., Channel 7
They're the ones that we want, supposedly. It's the finale.

America's Next Top Model Sunday at 9 p.m., Channel 56
They learn to pose. Which has nothing to do with smiling for the camera and everything to do with cheese.

ON DEMAND

Superman Returns

Comcast
Not a re-invention like 2005's "Batman Begins," but a respectful renewal of the Superman franchise, from director/co-writer Bryan Singer ("The X-Men"). The new kid, Brandon Routh (above), has the right mix of focus and blandness to step into the supershoes, and Kevin Spacey makes a good, mean Lex Luthor. Singer's hero-worship stalls the momentum, though; the film's generally thrilling without being a grand slam. (PG-13; shows through May 26) -- Ty Burr