Pretty much Excellent
I expected this episode to be completely in the past, showing us what happened to Locke, I didn't think we would see him and the Ajira people on the Island, but I was pleasantly surprised.
So much is going on, there is a war forming indeed. Jack is on Ben's side, and Locke is on Widmore's side. I think Widmore is the good guy anyway, at least as good as you can get comparing him and Ben. It will be interesting to see what Locke does to Ben in the next episode.