WORTH NOTING ON TV

FRIDAY

Washington Week in Review - 25 Years Later (PBS, 8-8:30 p.m.): When discussion shows say they're going to look back over the years at how things have changed - watch out! It's often fair warning of an impending bore. Yet there are exceptions, and this thoughtful panel - sanity's answer to the manic "McLaughlin Group is one of them. Made up of Washington print journalists, PBS's longest-running public-affairs series is celebrating a quarter-century of informed reflection. Yes, the correspondents are going

to take the long view of things this time. But the anniversary truly merits it. SUNDAY

Masterpiece Theatre (PBS, 9-10 p.m.): First in a two-part dramatization of "Adam Bede," George Eliot's great 19th-century novel of pastoral England. The dark plot follows the betrayal of a young carpenter (Bede) by his dairymaid sweetheart. TUESDAY

Happy Days Reunion Special (ABC, 9:30-11 p.m.): The Fonz may be long gone, leaving behind a leather jacket now on display, believe it or not, at the Smithsonian Institution in Washington. But the evocative and hugely popular series that made him famous lives on in syndication and pop history. It recaptured the '50s, gave "Rock Around the Clock" a new lease on life as the show's theme song, and made its successor theme song, "Happy Days," a hit on its own. The series ended its 10-year network run in 1984,

but now its cast - Henry Winkler (Fonzie), Ron Howard (Richie), and others - has regrouped to watch old footage and outtakes, and to offer anecdotes and personal reflections. Please check local listings for all programs, especially those on PBS.