* Another presidential debate on MSNBC.

* "Law & Order: Special Victims Unit" debuts on its new night on WRC.

* A new episode of "Farscape" and the debut of "Lexx" on Sci-Fi.

* "Dennis Miller Live" returns for a seventh season on HBO.

* And "Louis Rukeyser's 2000 Money Guide" on MPT and WETA.

Presidential Debate

Live from Columbia, S.C., a one-hour debate among the Republican presidential candidates, moderated by Brian Williams (MSNBC at 8).

Sports

NBA Basketball. Chicago at Washington (HTS at 7).

Public Broadcasting

Louis Rukeyser's 2000 Money Guide (CC). The financial guru provides advice on what do with your millions this year; includes an interview with Amazon.com founder and Time magazine Man of the Year Jeff Bezos. One hour (Channel 22 at 9; Channel 26 at 10).

Cable Series Premiere

Farscape (CC). Astronaut John Crichton faces torture in a high-tech alien "electric chair" after attempting to save Aeryn's life (Sci-Fi Channel at 8).

Cable Series Debut

Lexx (CC) chronicles the adventures of four misfit characters--a cowardly ship commander, a decapitated robotic drone, a love slave and a 2,000-year-dead assassin--aboard Lexx, a monstrous, dragonfly-shaped bug genetically altered for use as a spacecraft (Sci-Fi Channel at 10 p.m.).

Cable Season Premiere

Dennis Miller Live (CC) returns for its seventh season with guest Tim Robbins (HBO, 11:30 p.m.).

Prime-Time Movie

Rhapsody (2000). An up-and-coming recording star (Billy Dixon) teams up with a hot-and-sexy R&B artist (LisaRaye) causing a rift with his mad-and-jealous wife (Gina Ravera) who has career aspirations of her own. Two hours (BET at 10).

Newsmagazine

Dateline (CC) reports on "diversion burglaries" in which teams of thieves distract everyone in a store so accomplices can clean out the safes (Channel 4 at 9).

20/20 (CC) reports on jurors still suffering emotional turmoil after serving seven months in a brutal murder trial in California (Channel 7 at 10).

New Time

Law & Order: Special Victims Unit (CC). A sexual assault victim is none too cooperative in helping find the assailant; debuting at its new day and time (Channel 4 at 10).

Series

Providence (CC). Syd discovers a 19-year-old Russian art prodigy whose grandma has been hiding him in the basement for fear of deportation (Channel 4 at 8).

Sabrina, the Teenage Witch (CC) goes on a radical diet that renders her invisible just days before the all-important Winter Ball (Channel 7 at 9).

Now and Again (CC). Not only does Michael possess superhuman strength, he's also quite the ladies' man, which comes in handy for Theo, who's nervous about a big date (Channel 9 at 9).

The Hughleys (CC) feud with a Korean neighbor (Pat Morita) (Channel 7, 9:30).

Nash Bridges (CC). Caitlin goes undercover as a madam to stop a sex-slave ring (Channel 9 at 10).

Late Night

The Tonight Show With Jay Leno (CC). With '90s flash-in-the-pan Jenny McCarthy (Channel 4, 11:35).

Late Show With David Letterman (CC). With "Magnolia" director Paul Thomas Anderson (Channel 9, 11:35).

Lisa de Moraes is on assignment. The TV Column will return next week.

CAPTION: "Law & Order: Special Victims Unit" debuts on its new night on NBC.