The Zoo Story & Krapp's Last Tape-- Albee, Beckett, three actors and a tape recorder. At the ATMA 496 Tremont (338-9791).

SCREEN

Ashes and Diamonds--Andrzej Wajda's fine film about life and death in postwar Poland. At the BRATTLE (876-4226).

The Bank Dick--He's W. C. Fields. At the SYMPHONY I, 262 Huntington (262-8820).

Barbarella--Roger Vadim's very public salute to Jane Fonda; more or less what you'd expect. At the CIRCLE, Cleveland Circle, Brookline (566-4040).

Bedazzled--Stanley Donen off his stride, trying to pump comic life into the Faust legend. A movie with sparse laughs and nothing to say. At the ESQUIRE, Mass. Ave. on the Boston side of Harvard Square (491-7730).

The Boston Strangler--Believe your worst suspicions. At the MUSIC HALL, Tremont St. near Stuart (423-3300).

Camelot--An overblown adaptation of the Lerner & Lowe musical, with Richard Harris and Vanessa Redgrave. But swell music. At the FRESH POND in Fresh Pond, Cambridge (547-8800).

The Charge of the Light Brigade--A movie which argues that mid-Victorian England was a pretty inhuman place, revealing that quality most clearly in its incredibly stupid wars. Not as exciting as the book (Cecil Woodham-Smith's The Reason Why), but for those who like their wars with lots of gory realism and facile satire, may make enjoyable viewing. At the CHERI 3, Dalton St. in Prudential Center (536-2870).

The Family Way--A number of good actors badly directed in a foolish, one-size-too-large story of young marriage. Hayley Mills, John Mills and the Gang. At SYMPHONY I, 262 Huntington (272-8837).

Fanny Hill--There for the taking. At the CENTER, 686 Washington St. (426-0889).

55 Days at Peking--The Boxer Rebellion filmed in Spain with Dame Flora Robson as a wily Chinese, and Charlton Heston and the never-to-be-sufficiently studied Ava Gardner as doomed lovers. Nicholas Ray's last film is neither up to scratch nor all his (second-unit director Andrew Marton took over when Ray fell ill); but anything by the director of Rebel Wihtout a Cause, Party Girl, and Johnny Guitar is top-notch film-making by anyone's standards. At CARPENTER CENTER, Sunday.

Darling--Julie Christie in black and white. At the HARVARD SQUARE (864-4580).

Finian's Rainbow--A heavyhanded, poorly acted film version of the musical, with nothing but the splendid score and the magnificent Fred Astaire to recommend it. The director, Francis Fred Coppola, has a bad habit of chopping people's Lands and feet off; stars Petula Clark and Tommy Steele ought to act their age. At the SAXON, Tremont and Stuart (542-4600).

Firemen's Ball and Oratorio for Prague--Two first rate, if lightweight, Czech films which run amuck. In Milos (Loves of a Blonde) Forman's comedy, the dramatic action edges toward the consequential and finally becomes downright grisly, with no let-up in the constant low-key joking. In Jan Nemec's documentary, reality gets out of hand as the appearance of Russian tanks drastically alter what had been intended as a cheerful film about the liberalized Dubcek regime. At the EXETER, Exeter St. between Commonwealth & Newbury (536-7067).