DC Shoes sponsors a Rally Car driver, Ken Block. They made some videos of him showing off his driving skills in his race prepped Subaru WRX STI. Check out the videos on their site.
RX-7 Loses Wheels During Autocross. - Aren't you glad that wasn't you?
Old School Autocross - A video made in 1964 of an old Autocross type event.
Solo Course Design Handbook- A great guide on making autocross courses. By Roger Johnson of the Houston Region