Weekend Tv

SATURDAY Good Morning America (N) 7 a.m. KABC The Situation Room With Wolf Blitzer The economy: economist Mark Zandi. 3 p.m. CNN McLaughlin Group 6:30 p.m. KCET SUNDAY Today Political analyst Mark Halperin; missing 7-year-old; Labor Day barbecue. (N) 5 a.m. KNBC CBS News Sunday Morning The Army's first blind active-duty officer; automaker BMW's aging workforce. (N) 6 a.m. KCBS Today Jobs; facts about weight; cleaning cars, electronics and purses; brownie taste test.

Basketball playoffs? Baseball games? For the avid horse racing fan, there is but one big event this weekend-- the Kentucky Derby. ABC picks up the first leg in racing's Triple Crown starting today at 1:30 p.m. (7)(3)(10)(42). Meanwhile, the NBA playoffs can be found on CBS. Golden State plays Phoenix today at 12:30 p.m., with two other games airing Sunday at 10 a.m. and 12:30 p.m. on Channels 2 and 8. In baseball, the California Angels and Toronto Blue Jays take the field Sunday at 10:30 a.m. (5)

This weekend's viewing choices will be highlighted by the men's NCAA basketball tournament, an interview with former Soviet President Mikhail Gorbachev, a package of films by and about women and the final telecast of ABC's "Business World." Public Affairs: TODAY: "Today" looks at the current housing market, an Oscar preview, dog-training and new baby products, 6 a.m. (4)(39); 7 a.m. (36). . . .

HBO offers the retrospective "20 Years of Comedy on HBO" tonight at 10:30, featuring some of TV's earliest uncensored comedy routines by a cavalcade of comedians who took advantage of the freedom to utter whatever they wanted. Among the performers are Robert Klein, Robin Williams, George Carlin, Brett Butler, Jim Carrey and Damon Wayans.