Origins episode (Jacob and his brother)

I love this episode. Great storytelling. Answers without being too simplified.

I totally forgot that Jack found the black and white stones in the cave way back in the day.

So, the black smoke is a monster and he uses Jacob's brother's body, (just like he's currently using John Locke's body) to appear human. Right?

I really like Jacob's brother's character. He was human. I just want to know what the lady saw in him that made her kill their birth mother, because it didn't appear that she was going to kill her after Jacob was born. It was only when the brother was born that she got all crazy with smashing rocks in her head.

I'm surprised they never used the term "the others" for the people on the other side of the island.

So, the light, the electromagnetism, the black smoke...they all work together somehow?

Anyway, I really liked this episode. With only one more episode to go before the finale, I really hope the last few hours of LOST are only going to get better.

Your thoughts?