Man I love Lost. I really love Lost. Nothing like a good mind-fuck to get me hooked for life. I even stuck around through the fourth season of going-nowhere craziness, all to be rewarded with a fantastic season 5 that has me clamoring for all the info I can get.
I don't want to give away any spoilers here, but if you did watch the finale already and are looking for some great recaps or discussions about theories, have I got some links for you.
Television Without Pity and Jezebel usually have the best recaps, adding a lot of there own wonderful insight, but they're not posted yet. As of right now, you can only get a general Television Without Pity recap. Worth checking out if you feel like you missed something.
Salon always has a great wrap-up of most season finales, and the "Lost" wrap-up was no exception. It's leaves you feeling like you are very smart for enjoying this show, always a plus.
For a lot of crazy talk about what everyone reallllly thinks is going on in the Losties universe, you have to check out the Lostpedia theory page for the finale. So fun, I killed about 2 hours looking up Egyptian gods and researching the book that Jacob was reading... Oh no I've said too much! Check out the links if you want more!