SLR doing video??!
I got a chance to play with one yesterday in Arlington, Texas. This is one of the first in the US to come in. My name is on the list, but not high enough to take one home yet. I did get some sample images however.
I put on Av mode, aperture priority. I wanted to see how it handled adjusting exposure, it was quite violent. Later in the video I tested out the auto focus button. I was impressed at the speed, but I had low expectations. It was a lot faster than the D90.