TONIGHT'S MUST-SEE

"American Idol," 7 p.m., Fox. This could be the night the big voices are unleashed. The category is abstract, leading into Wednesday's "Idol Gives Back." Producers say contestants will sing "songs that inspire them" or "songs of compassion and hope." That lets the powerhouse women — Jordin Sparks, LaKisha Jones and Melinda Doolittle — sing big gospel songs. It also allows other genres. Sanjaya Malakar was booted last week, leaving three men — Blake Lewis, Phil Stacey and Chris Richardson. Corporations have promised a donation for each viewer vote. The money goes to help kids in Africa and in the U.S.

OF NOTE

"Moulin Rouge" (2001), 5 p.m., AMC; "Girl, Interrupted" (1999), 5 p.m., WE; "Steel Magnolias" (1989), 8 p.m., ABC Family. It's a strong movie lineup, so take your pick. "Magnolias" mixes comedy and tragedy with veteran actors and then-newcomer Julia Roberts. "Girl, Interrupted," set in a psychiatric ward, stars Winona Ryder, with Angelina Jolie in Oscar-winning support. "Moulin Rouge" is a musical with Nicole Kidman, but the highlights are the great visuals from director Baz Luhrmann.

"The George Lopez Show," 7 and 7:30 p.m., ABC. The first episode has a smoking ban causing trouble for George's mom; the second has Mario Lopez (the "Dancing With the Stars" runner-up) as a cop who's a family friend. He's interested in George's niece.

"House," 8 p.m., Fox. Last season we met Dr. Foreman's working-class dad, played by the brilliant Charles Dutton. He returns unexpectedly with Foreman's mom (Beverly Todd). Also, Wilson goes on another date with Cuddy and we meet his ex-wife. Jane Adams, Niles' jilted bride on "Frasier," plays her.

"Dancing With the Stars," 8 p.m., ABC. The field is trimmed to six.

"Boston Legal," 9 p.m., ABC. Alan Shore is in a case involving a woman who sues a store for selling "pornographic" dolls; Denny Crane faces trouble for a politically incorrect comment.

"Independent Lens: Enron: The Smartest Guy in the Room," 10 p.m., PBS. This Oscar-nominated documentary looks at how the country's seventh-largest corporation managed to go broke — with the people at the top emerging with $1 billion.