Dan, it seems you have been having rotten luck with the local law enforcement
G-Benz touched on something about aggressive driving. I must agree. Police notice aggressive drivers much more so than (moderate) speeders...I know...I've done enough ride-alongs to know what they are looking out for, and what catches their attention.
I hope you don't lose your license.
But, I would seriously consider taking a defensive driving course, or at least hitting the bookstore and getting a book on it.
Try this....
http://www.amazon.com/exec/obidos/ASIN/0933181086/qid=1049457810/sr=2-3/ref=sr_2_3/102-7545640-9273748
Leave the performance driving for a local track day with the BMWCCA or the SCCA. It'l be A LOT less expensive in the long run.
Good luck!