-- The Exorcist: Linda Blair, pea soup, 360-degree head turn, Satan, "the power of Christ compels you...," blah, blah -- whatever, it's still a great movie. And besides, it stars Ellen Burstyn, who is practically perfect in every way. Part of the Castro Theatre's William Friedkin Series, it screens tonight at 7 p.m.; $6-$9. -- The Turn of the Screw: Henry James' complicated Gothic tale about a governess in a haunted house gets the......