I've started and abandoned about 5 posts since I got back from Japan, and each time it was about something that intensely interested me, but I ran out of time to elaborate on or investigate further. All I'll say for now is that the DHTML world has gotten a lot more interesting in the last month and a half, and I feel honored to be a part of it.
As a related aside, being in SF seems to have this strange and wonderous side-effect by which you meet people you've always wanted to talk to as a mater of course. It really is a place where bright people go to hang out with other bright people. Despite all of it's failings, traffic, stupid politics, lack of weather, etc., I can't imagine being anywhere else right now.
Perhaps there's just something about this place that makes you feel like you should try to do something cool, even if you don't know what it is yet. I like that.