So ... I thought about posting my take on the LOST finale, but here we are, a week and a half later, with nothing to show. Like Allison, I thought the finale was well done and a fitting end to the series. Other folks were disappointed. And that's cool. I've kind of burned out on reading the various pro and con assessments, so I'm just going to say I loved it and leave it at that. Even with its faults (both with the episode and as a finale to the series), "The End" held up well to a second viewing. In fact, it left us wanting to re-visit the entire series, though probably not anytime soon. We did re-watch the pilot, though, and it was pretty cool to see how well these two bookends held together.
Which brings me to the main thing I wanted to mention:
Mark T. aka the Foolish Sage has some great thoughts as part of a LOST Retrospective. The best part is that he actually is re-watching the series from the start, and providing comments with the entire series in mind. Should be good. He's got three episodes done already, and I think it really shows how well the show coheres from start to end. Do check it out.