Well, I can't say it shocks me at all.
The idea of The Tour is just sooooooooo extreme that anyone who completes it must, surely, have been exposed to doping (in some way!).
On a lighter note...
http://www.cyclingplus.co.uk/newsdetails.asp?id=733
http://youtube.com/watch?v=7upvpUId6i8
Wouldn't mind going to see that, might see if there's any cycling chicks who want to come with me???