WORTH NOTING ON TV

SATURDAY

Christmas in Washington (NBC, 9-11 p.m.): Pop and classical artists perform seasonal music in the 11th version - hosted by Julie Andrews - of this now-traditional celebration. The invited audience is expected to include the President and First Lady, and will certainly have its share of government officials and other dignitaries. SUNDAY

Charlton Heston Presents the Bible (Arts & Entertainment, 8-9 p.m.): He probably shouldn't be billed above the subject, even if he is the man many still think of as Moses in Cecil B. DeMille's 1956 film "The Ten Commandments." But Heston's impressive reputation is one way of drawing attention to this ambitious four-part series, running on consecutive nights. Heston introduces each program and narrates stories from both the Old and New Testaments, often taking you on location to the actual sites in a kind

of historical and archeological journey. Great literature, painting, and music are used as context for Heston's descriptions and Biblical readings. WEDNESDAY

Great Performances (PBS, 2:35-3:35 p.m., E.T.): "Christmas in Vienna" offers a live concert from the celebrated Rathaus, or City Hall, a splendid building on Vienna's Wiener Ringstrasse. Listen - carefully - to the lineup: Jose Carerras, Diana Ross, Placido Domingo. That's right, pop singer Ross is one of the stars, since the musical cross-section includes numbers like "Have Yourself a Merry Little Christmas" along with the carols and classical pieces.

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