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).

Belle de Jour -- Luis Bunuel in high gear, with Catherine Deneuve. At the WEST END North Station (523-4050).

The Big Gundown--Mr. Ugly hits town. At the PARAMOUNT, Washington St. across from Raymond's (482-4820).

The Big Sleep--Hawks, Bacall and Bogart, Sunday at the CARPENTER CENTER.

Born Wild--Remember little Patty McCormack? At the CENTER, 686 Washington St. (426-0889).

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 Caretaker--Pinter, Losey and Donald Pleasance. Through Saturday at the BRATTLE (876-4226).

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).

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

Finlan'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 hands and feet off; stars Petula Clark and Tommy Steele ought to act their age. At the SAXON, Tremont and Stuart (542-4600).

The Firemen's Ball--Looks like another good Czech film. Opens Saturday at the EXETER, Exeter St., between Commonwealth and Newbury (536-7067).

Funny Girl--If you like Barbra Streisand, there is no getting around the fact that this movie works. The score, the screenplay, and even Omar Sharif are fine. The photography, on the other hand, is unfortunate, as is the editing. At the CHERI 2, Dalton St. in Prudential Center (536-2870).

The Heart is a Lonely Hunter -- Very weighty stuff, with the sensitive Alan Arkin as a sensitive deaf mute. At the ASTOR, Tremont St. near Boylston (542-5030).