I have to agree. These past 2 episodes, "Life and Death of Jeremy Bentham" and "LaFleur" were REALLY good.
Namaste insinuates that it will not only be good, but as you said, begin to reveal the story of the ones who were left behind and started working for Dharma. We've waited 4 seasons and now I think we're about to find out a good bit about Dr. Marvin Candle other than the fact he has changed his name in some of the orientation films. I'm hoping we get to discover more about the leak "incident". And who his child is...
Also, during this break from last week I've gone back and re-watched all the episodes in season 5. Remember when they returned to their camp and it was destroyed? Remember when they got in the boat and were paddling? There was an Ajira water bottle. Not sure if anyone caught that.