* "Adventures in Time" on WRC.
* Christmas performances on WETA.
* "A Century of Living" on HBO.
* And "The Science of Christmas" on Discovery Channel.
College Football. Mobile Alabama Bowl: Texas Christian vs. East Carolina (ESPN2, 7:30).
NHL Hockey. Washington at Vancouver (Channel 50 at 10).
The NewsHour With Jim Lehrer (CC) interviews Vice President Gore (Channel 26 at 7).
Christmas Gloria. The Mormon Tabernacle Choir and the Canadian Brass Ensemble perform Christmas ditties in Temple Square in Salt Lake City. One hour (Channel 26 at 8).
Carols From Atlanta. Singers from Morehouse and Spelman colleges perform African folk hymns and Negro spirituals in a concert from Atlanta. One hour (Channel 26, 10:30).
A Century of Living (CC). Centenarians born on or before the turn of the 20th century talk about the changes they've witnessed in the last 10 decades. One hour (HBO at 8).
The Science of Christmas. Leave it to the Discovery Channel to explore the physics of Christmas from why Santa's team would actually be made up of female reindeer to the best way to store candy canes. One hour (Discovery Channel at 9).
Adventures in Time: The National Geographic Millennium Special (CC). John Lithgow takes us on a journey from the beginning of time to the imagined future, with stops along the way exploring the animal kingdom, ancient civilizations and space. Two hours (Channel 4 at 8).
The Christmas Wish (1998) (CC) (R). Neil Patrick Harris (he's TV's "Doogie Howser") is a young go-getter who's making a killing on Wall Street but is called back home to settle the estate of his recently widowed grandma (Debbie Reynolds). Two hours (Channel 9 at 9).
20/20 (CC) reports on a man's search for the family that he lost as a young boy in Colombia, South America (Channel 7 at 10).
Beverly Hills, 90210 (CC). Matt has a breakthrough in his relationship with Kelly, and Donna and Gina are getting into the whole sisterhood thing (Channel 5 at 8).
Cosby (CC). Ruth and Pauline add a bookstore to their cafe (Channel 9 at 8).
Get Real (CC). Meghan's got a crush on her best friend's boyfriend while Mitch searches for his Jewish heritage (Channel 5 at 9).
The Tonight Show With Jay Leno (CC). With Winona Ryder and Shaquille O'Neal (Channel 4, 11:35).
Late Show With David Letterman (CC). With Marv Albert (Channel 9, 11:35).
Lisa de Moraes is on vacation. The TV Column will return.
CAPTION: Centenarians recall the events that shaped their lives in HBO's documentary "A Century of Living." Audrey Stubbart, at 15 (above) and today, participates.