I knew there had to be a reason why anyone ever cared about Sean Bean. A more wooden actor I think I've never seen, but here his conniving "Ranuccio" is sexy and provocative and put together with Nigel Terry's convincing performance as the eponymous artist and Dexter Fletcher's efforts as the younger, manipulative, Caravaggio, this is a no-holes barred/bared look at debauchery and hedonism in a papal Italy that was…