impossible to discuss "Lost"

It's absolutely impossible to discuss "Lost" without falling back on the eternal "Why:" As in, Why are these characters in situations which could/should/ would lead to other situations, mysteries or (even) answers? Then, of course, there's also the eternal "who?" too As in, who was that sultry mysterious beauty tormenting Jack (Matthew Fox) with offers of food, kindness and even personal information in last night's season opener?

Tags: Matthew Fox