I've changed jobs. Well, sort of :)
For the Whidbey product release I was the performance architect on the CLR, and I can't even start to tell you how much fun that was. And how educational it was.
So the bad news is I'm not doing that anymore.
But the good news is that The Powers That Be have asked me to continue doing what I do for the whole of Developer Division, not just the CLR. So me and a few colleagues are going to be driving the same kind of performance culture and practices that we used on the CLR throughout the division. It's a big challenge but I'm looking forward to helping even more people here at Microsoft and in turn even more of my customers.
Wish me luck!
P.S. The diabolical laughter you hear is me :)