Keamy obviously, plus I think the reason for Jack is... well... pretty crap. Let's compare; Jack's up there for not taking advice, (As he believed he was saving as many people's lives as he could) To Ben Killing Keamy, (Alright he wanted revenge for alex which i understand, but he was willing to sacrifice the people on the boat, which Is
FAR worse than what Jack has done!) Back onto Jack though, he Saved Desmond's life, and got some of his people off the Island....
I
REALLY don't think he deserves to be up there...
But anyways i chose Keamy