WORTH NOTING ON TV

SATURDAY Little League World Series (ABC, 4-6 p.m. ET): Covered live from Williamsport, Pa., the game marks the 50th anniversary year of Little League baseball. Great Moments From Austin City Limits (PBS, 9-10:50 p.m.): And there have been many of them on this country-music series over the past 14 years - like the time an obscure singer-writer named Willie Nelson appeared and made a national hit. TUESDAY Blacks in White America (ABC, 10-11 p.m.): Behind this documentary lies an interesting and commendable decision by ABC News: to ask the black people in its own organization - correspondents, producers, researchers - to answer the question of what it's like to be black in the United States. The result - even if it does not hit all points - can thus never lose its credibility. (The theme continues the same night on a special version of ``Nightline'' - 11:30 p.m. - anchored by Ted Koppel. P.O.V. (PBS, 10 p.m.-midnight): ``Partisans of Vilna'' documents how a small group of Jewish youths had the temerity not to meekly accept the idea of being slaughtered at the hands of the occupying Nazis. The prize-winning film uses rare footage and other materials to capture the atmosphere of the time (World War II) and the place (Vilna - ``the Jerusalem of Lithuania'').

WEDNESDAY Timeline (PBS, 8:30-9 p.m.): In ``Fall of Byzantium,'' Istanbul is taken by the Ottoman Turks. The Renaissance is breaking over Western Europe. And it's all being ``covered'' live on TV - at least in this series, which employs the old ``You Are There'' device of taking mikes and cameras back in history to record those epochal events for the evening news.

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