WORTH NOTING ON TV

FRIDAY The 23rd Annual NAACP Image Awards (NBC, 9:30-11 p.m.): People who paint a positive portrait of blacks in the media are the heroes of this traditional event, now getting its first airing in prime-time. From little Raven-Symone of `The Cosby Show' to veteran Cab Calloway, a range of artists are saluted - including the late Sarah Vaughn.

SUNDAY

Masterpiece Theatre (PBS, 9-11:30 p.m.): It's now 20 years since these British productions began their reign of excellence - well, for the most part - in America, and the anniversary is being marked with nine weeks of selected past programs, introduced by Alistair Cooke. They begin here with three ``Upstairs, Downstairs'' episodes, including the one - so compelling and funny - about the King coming to dinner at the Bellamy's.

SUNDAY

Held Hostage: the Sis and Jerry Levin Story (ABC, 9-11 p.m.): After powerful performances in ``Nobody's Child'' and other dramas, Marlo Thomas here proves equally effective in another fact-based role: Sis Levin, who conducts a relentless door-knocking campaign to free her newsman husband after he is kidnapped in Beriut.

WEDNESDAY

All Our Children (PBS, 8-10:30 p.m.): Bill Moyers begins public TV's ``Year of the Family'' with a look at a huge American problem: some 10 million youths who ``graduate'' from high school unprepared either for life or for a decent job. After a 90-minute documentary about four effective school programs, Moyers moderates a 60-minute panel talk.

Please check local listings for all programs, especially on PBS.