Rene Letzgus' 1998 French documentary of a 1976 concert is hampered by a few distractions such as shots from inside a car cruising through Paris and actor Richard Bohringer in a studio muttering comments in unsubtitled French. (To all appearances these intrusions are simply efforts to paper over gaps in the visual continuity.) But the event being documented is so riveting and so eccentric in its own right that the interruptions hardly matter. The only time I've seen Simone live was when she sang "Mississippi Goddam" on the last lap of the Selma-Montgomery march, and although she doesn't reprise that fiery anthem here, she's just as unforgettable. This isn't so much a concert as a work of performance art--one of the best I've seen since Richard Pryor--Live in Concert--in which Simone's divalike behavior is as much a part of the show as her Juilliard-trained piano playing and her stupendous untrained voice. Whether she's performing "Little Girl Blue" and a Langston Hughes tribute, alternately barking at or complimenting the audience (or getting them to sing with--or instead of--her), making cryptic comments to herself about show business or life in general, or dancing in high heels to African drums (when she isn't simply listening to them, or adding a piano riff), she's such a commanding and powerful presence that I was mesmerized for most of the film's 75 minutes. To be projected from Beta SP video. Gene Siskel Film Center, 164 N. State, Sunday, January 19, 6:15, and Thursday, January 23, 8:15, 312-846-2800.