This was one of my favorite episodes too. It was wonderful seeing these actors and actresses play these characters, I suspect some of them (maybe most) for the last time.
I suspect there's a strong correlation between people that like the end of Lost with people that liked this episode. I enjoyed Lost for the wonderful moments between the characters, I really didn't care that much about whether all the mysteries got solved or not. I could see this episode aggravating people who wanted to know who was in the other outrigger.
I'm so torn, I really want to discuss this more but I am going to great lengths to avoid spoilers (and spoilers disguised as "fan theories"). I'll probably avoid this thread until the season is over. I have a feeling it's going to be 100mph from here on out.