* Today, Game 2 of the National League playoffs on WRC.

* Tonight, Game 1 of the American League playoffs on WTTG.

* "American Photography: A Century of Images" on WETA.

* And Farrah Fawcett on "Late Show With David Letterman" on WUSA.

Sports

Major League Baseball (CC). National League Championship Series, Game 2: New York Mets at Atlanta (Channel 4 at 4 p.m.); American League Championship Series, Game 1: Boston at New York Yankees (Channel 5 at 8).

Public Broadcasting

American Photography: A Century of Images (CC) focuses on the camera's roles as recorder of public events, family historian, vehicle of artistic expression and tool for influencing public opinion. Three hours (Channel 26 at 9).

Prime-Time Movie

Lethal Vows (1999) (CC). When a man's (John Ritter) second wife (Megan Gallagher) dies under mysterious circumstances, his ex-wife (Marg Helgenberger) accuses him of murder. Two hours (Channel 9 at 9).

Cable Special

NetAid: A Concert Special. Highlights from Saturday's United Nations-sponsored anti-poverty concert. Two hours (TNT at 8).

Newsmagazines

Dateline NBC (CC) reports on British tourists caught in severe weather in Colorado (Channel 4 at 8).

20/20 (CC) reports on a 17-year-old girl who says she is wrongly accused of killing her newborn; plus an interview with Bruce Willis (Channel 7 at 10).

Series

The Drew Carey Show (CC). While Drew dreads going to the high school reunion, Lewis attends with Bo Derek (appearing as herself) (Channel 7 at 9).

Roswell (CC). Max and Liz come to realize the deep bond between them (Channel 50 at 9).

Law & Order (CC). A 15-year-old drug addict is found murdered and the detectives find a slew of likely suspects in her family (Channel 4 at 10).