Today on TV

The Superstars (7 p.m., Ch. 4): Events include archery.

Hell's Kitchen (7 p.m., Ch. 13): The sixth-season premiere of this unpleasant show.

Torchwood: Children of Earth (7 and 10 p.m., BBC America): In Part 2 of this five-part miniseries, Torchwood goes underground. (Continues Wednesday)

Better Off Ted (8 p.m., Ch. 4): Lem and Phil think they have discovered the cure for baldness. (Darn. It's a fictional show.)

America's Got Talent (8 p.m., Ch. 5): The auditions continue. (A repeat airs at 7 p.m.)

Nova scienceNOW (8 p.m., Ch. 7): How the sense of taste works; the evolution of language.

Saving Grace (8 and 10 p.m., TNT): Grace disappears.

Medium (9 p.m., Ch. 2): It's a repeat, but it's not just a repeat. It's the first time this show, which aired for five seasons on NBC, is airing on CBS. In the fall, "Medium" will air Fridays at 8 p.m. on CBS.

Primetime: Family Secrets (9 p.m., Ch. 4): Well, here's a tough secret to keep. A family with two mothers because the father underwent gender-reassignment surgery.

10 Things I Hate About You (9 and 10:30 p.m., ABC Family): Bianca wants to go to a party her father has forbidden her to attend.

P.O.V. (11 p.m., Ch. 7): "The Betrayal" is a film about a family that escapes Laos during the Vietnam War and settles in America.

Rescue Me (11 p.m., FX): The Gavins confront Tommy about his alcoholism.