Remember the dumbstruck, jaw-dropped expressions on "Springtime for Hitler's" shocked opening-night audience in Mel Brooks's original film of The Producers? That will no doubt be your face through much of the two-and-a-half-hour running time of this infamous 1979 pornographic epic that was a (Penthouse) pet project of publisher Bob Guccione. That's not necessarily a bad thing. But don't take our word for it. Listen to Helen Mirren--yes, the Oscar-winning Queen herself--who stars as Caesonia, Caligula's third wife and "the most promiscuous woman in Rome" (and in this film's salacious vision of Pagan Rome, that is saying something). In her very gracious, thoughtful and candid audio commentary that alone is worth the price of this set, she remarks, "I think it's a movie that is unlike any other, which is difficult to achieve." And for those of a more prurient bent, she adds, "It has an awful lot of bottoms." Malcolm McDowell (A Clockwork Orange) gives a brave and fearless performance as Caligula, the hated and feared emperor corrupted by absolute power and no doubt voted Most Likely to Be Assassinated. The film unflinchingly charts his plummet into madness and the brutality of his reign in scenes of hardcore sex and violence that cannot be described here ("I can't watch," Mirren cries to her interviewers over one scene in which unfortunate characters are beheaded by a blade-spinning combine. "I can't even listen to it").