HEre is a short, informative (no nudity) vid about the testy festy. Note there is not even the slightest mention of the nakedness here (where, as I quoted above "they have more people getting naked in public than i have ever seen"). The vid mentions crowds now of 15,000 which is pretty impressive.
It kind of cool the way the young girls get involved here, talking about what goes on (wink, wink) with the eating of testicles etc.
http://www.youtube.com/watch?v=s427-0fBpQ0
EDIT: for those that are curious, the testy festy is held near Missoula Montana (on the west side of the continental divide which makes it "Northwest US" according to some).
Klondike