I rode the appropriately named Breathless Agony century today, 114 miles with 12,000' of climbing and an 8,400' summit.  Whew.  There is one stretch of 11 miles called Damnation Alley where you climb 3,000', I think that might be the hardest climb I've ever done.  But it is a beautifully organized ride with a great burrito lunch at the end, great SAG, and the views and riding is first class. Highly recommended if you ever want to test yourself :)

I posted a bunch of pictures in case you're interested:

http://pics.eichhorns.com/pics.cgi?A090502-BreathlessAgony

This guy is everpresent on this ride:

PS let the record show my time to the summit was 6:00.  Respectable :)