so we got a good look at the monster tonight. it is a black cloud, no clicking gears or anything, so it's a separate thing from that rope that snagged locke last season.
the cloud flashed and i could catch the image of the old man that young eko kills during the inital scene. i thought i could see an image of a woman flash by (perhaps the woman who was selling the virgin mary statues), so it could contain memories of the target or something.
so, so far only locke and eko have stared the thing in the ... er, face, and not been hurt. interesting.