TONIGHT'S MUST-SEE

"Mean Girls" (2004), 7 p.m., TBS. After years of being home-schooled overseas, a smart teen (Lindsay Lohan) is thrown into the social swirl of a high school. There, she finds a decent teacher (Tina Fey), a few friends and lots of mean girls. That sounds like a cliche movie, but it has a sharp script (by Fey) and a terrific cast. Forget anything you hear about Lohan in the gossip columns. On camera, she projects intelligence and humanity. Here, her strong supporting cast includes Rachel McAdams, Lacey Chabert, Amy Poehler and Lizzy Caplan of "The Class."

"Rudolph the Red-Nosed Reindeer" (7 p.m.), "Frosty the Snowman" (8 p.m.) and "Frosty Returns" (8:30 p.m.); all CBS. By now, Rudolph and Frosty have become part of the national holiday. "Rudolph" was a TV-animation pioneer in 1964; "Frosty" followed in 1969. It hardly seems worth it to mention that "Rudolph" has stiff animation and an overstretched plot — or that "Frosty" is fairly pleasant, but its sequel is awful — bit there you are.

OF NOTE

"Everest: Beyond the Limits," 6 p.m., Discovery Channel. A traffic jam at the top of the world? That really happens in this fascinating chapter of the documentary series. With their oxygen supply depleting, climbers must wait for their turn atop Mount Everest.

"Justice," 7 p.m., Fox. Ron has personal feelings about this case: The suspect is his former girlfriend (Jane Seymour).

"Las Vegas," 8 p.m., NBC. A reputed mobster has bought a million-dollar wedding package for his daughter, complete with diamond and Wayne Newton. Then things start to go wrong.

"Law & Order," 9 p.m., NBC. A lawyer, working on an important case, is killed. The investigation soon focuses on an escort service.

"Numb3rs," 9 p.m., CBS. Seven freeway attacks use a variety of methods. The first task is to figure out if this is all the work of the same person.