That most Shakespearean of movies The Sorrow and the Pity, Marcel Ophüls’s four-and-a-half-hour masterpiece of collaboration and resistance in occupied France, is getting a two-week engagement at the Film Forum in its original undubbed French-language version, subtitled and newly printed in 35-mm. It remains the preeminent documentary about historical tragedy and one of the most exhilaratingly demanding experiences the movies have ever offered… . Luis Buñuel’s marvelous The Discreet Charm of the Bourgeoisie is also out there in revival, at the Lincoln Plaza, on the occasion of the director’s centennial year. Much has been written about this film as a debonair surrealist jape, and Buñuel himself commented at the time, “I now say with humor what I used to say with violence.” But take a look again at its dream sequences, especially the nocturnal one involving the young man in the side street, and you will see a master disturber still at work.