What makes a man into the ideal Batman? Well, there's the murdered parents, of course, we've seen that enough times, in enough slow-motion close-ups to know that's clearly essential. But over the years many Bruce Waynes have come and gone and the debate still rages about which square jaw fit best in the cape and cowl, as evidenced by this very recent poll that ranked Val Kilmer dead last (understandable) and straight-up omitted Adam West (an actual crime). Is Christian Bale's two-voiced Dark Knight the G.B.O.A.T.? Ben Affleck'…