There is a 4 minute video posted by Michael Barry of pro cycling Team Columbia and author of a few books including "Inside the Postal Bus", when he rode with Team U.S. Postal.
He and his teammate rode, during training, the Cipressa descent, from the Milan - San Remo race, with a helmet cam. Notice how fast they ascend to the top of the crest.
http://michaelbarry.ca/2010/03/cipressa-descent/
I hope you like it.