TURN-ONS AND TURN-OFFS IN CURRENT HOME ENTERTAINMENT RELEASES : Excellent Good Fair Poor : VIDEOCASSETTES

“That Obscure Object of Desire.” Embassy. $29.95. “The Discreet Charm of the Bourgeoisie.” Cinematheque Collection. $59.95. By the ‘70s a kind of septuagenarian hippie--mocking, irreverent, bawdily comic, satirically lethal and occasionally incomprehensible--director Luis Bunuel portrayed in both these masterworks a foolish and posturing bourgeoisie collapsing amid daily terrorist assaults. Chiding convention, he used two actresses alternately in the same temptress role in “Obscure Object.” Fernando Rey, carrying a never-explained sack in that film and playing a diplomat from an unlisted dictatorship in “Bourgeoisie,” lends Bunuel’s surreal fancies a mad, beguiling logic. Films of genius, like no one else’s. Both