zhu -
I took every photo on the site - that's what I do for vacation.
On the first 20 or 30 of the freestyle pictures I took the original photos and cropped them down, so I centered each one manually. I got tired of that and left the rest as-is. In case you didn't notice, a couple of them (in the 60-80 range) have a small rainbow in the lower right corner.
The event was held at Pikes Peak International Raceway in Colorado Springs, Colorado. The main event was the AMA racing - Superbike, Supersport, Formula Xtreme and Superstock, but they had a Kicker-sponsored show inbetween races called the "Gravity Check." I found a great spot to stand and took pictures until my CF was full.
(In case it's not clear - I'm not the subject of any of the photos on my site. I'm the photographer.)
I love the 20D - just got it in February.
- Alan