Let's do a little thought experiment here. Say you're a director, and you're trying to market a new four hour long epic that's was derided by Variety as "a commercial impossibility" after its debut at Cannes.You need to stir up a little hype, a little press. Get the kids excited. Oh, and did we mention that the epic is about uber-polarizing Cuban revolutionary and world-wide T-shirt icon Che Guevara? So what are you going to do?Short of staging a guerilla premiere in downtown Havana, Ripti