WORTH NOTING ON TV

THURSDAY Songwriters Hall of Fame 20th Anniversary (CBS, 9-11 p.m.): Dick Clark and Anita Baker play host to a gala from Radio City Music Hall, featuring pop, soul, jazz, and Broadway singers who range from Patti LaBelle to Anthony Newley, together with a flock of composers. FRIDAY Evening at Pops (PBS, 9-10 p.m.): With yet another anniversary, John Williams and the Boston Pops orchestra celebrate 20 years of telecasts. Guests include Art Buchwald (providing his own witty narration for ``Carnival of the Animals''), Roberta Peters, Robert Merrill, the Paratore Brothers, and Victor Borge.

SUNDAY Wimbledon Preview (NBC, 3-4 p.m.): Rod Laver, Boris Becker, Andre Agassi, and Martina Navratilova are among the players chatting about this year's All England Tennis Championships, which start July 1 at Wimbledon.

Treasure Island (TBS cable, 7-9 p.m.): Premi`ere of the colorized version of the 1934 film starring Jackie Cooper and Wallace Beery.

TUESDAY Circus of the Stars (CBS, 9-11 p.m.): Bea Arthur and Martin Mull are the ringmasters as Mary Hart, Harvey Korman, and two dozen other TV personalities test their aptitude for circus feats.

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