* "Tobacco Wars" on the Learning Channel.

* A new episode of "The Tom Green Show" on MTV.

* Thursday night football features the Chiefs vs. Ravens on ESPN.

Sports

NFL Football. Kansas City at Baltimore (ESPN, 8:15 p.m.).

Public Broadcasting

The NewsHour With Jim Lehrer (CC) interviews comedian and 1999 Mark Twain award recipient Jonathan Winters (Channel 26 at 7).

Mystery! An Unsuitable Job for a Woman (CC). In the conclusion, Cordelia discovers a connection between a murdered artist and the man she was hired to follow (Channel 26 at 9).

Cable Special

Tobacco Wars. Walter Cronkite narrates this two-part, three-hour history of the cigarette's rise as one of the most profitable consumer products in the world; in addition, the series will examine what the tobacco companies knew about the dangers of smoking. Two hours (TLC at 9; tomorrow night's one-hour conclusion airs at 9).

Cable Season Debut

The Tom Green Show. The wacky prankster returns with a new Los Angeles studio and a new sidekick. 30 minutes (MTV, 10:30).

Newsmagazines

20/20 Downtown (CC) reports on "hoarders," people who suffer from a compulsive need to collect things (Channel 7 at 10).

48 Hours (CC). The story of a juvenile delinquent in Tampa, who is given a last chance to straighten out his life (Channel 9 at 10).

Series

Friends (CC). Rachel wants Ross to says he's mentally unstable so their marriage can be annulled (Channel 4 at 8).

Frasier (CC). Roz hires ex-lover Bulldog to baby-sit her infant daughter (Channel 4 at 9).

Action (CC). Dragon defends the violent content of his movies during a Senate committee hearing (Channel 5 at 9; a repeat episode follows).

Wasteland (CC). Dawnie has a date with a guy many consider the perfect man (guest star Antonio Sabato Jr.) (Channel 7 at 9).

Chicago Hope (CC). Dr. Cacaci attempts suicide (Channel 9 at 9).

ER (CC). Dr. Lawrence (Alan Alda) argues with the nurses over treatment dosages, and Cleo diagnoses food poisoning in a little girl (Channel 4 at 10).

Late Night

The Tonight Show With Jay Leno (CC). With Calista Flockhart and Jewel (Channel 4, 11:35).

CAPTION: Walter Cronkite narrates "Tobacco Wars," on TLC at 9.