A distinguished international cast; a screenplay by Gore Vidal; respected, award-winning talent behind the scenes; and millions of dollars at its disposal. What could possibly go wrong? Where would you like to start? CALIGULA (1979) had so much potential. I'd like to think that there's another universe where Vidal's much darker original script was given over to, say, Stanley Kubrick. That world now has a SPARTACUS (1960) for the post-porn age. Instead, we have something closer to CENTURIANS OF ROME (1981) with only slightly less cocaine. Producer Bob Guccione could have made a case for the big...