I roll with the punches as a dedicated Lost fan, but the "what happened to Annie" mystery has haunted me. Can't say I can ever accept that Ben never looked for her. One of my only real disappointments. Maybe because I empathized with that period in Ben's life so much. So much was invested by the fans into where this girl went and how Ben's life would be effected.
Otherwise , I have loved season six and gone back to watch many other past episodes from other seasons. Very telling when watching backwards! Enjoying just as much the second time. Jack and Desmond my favorite characters even though Michael E. is obviously a hell of an actor.