Sebastien Foucan was truly awesome in Casino Royale. I just watched that movie a few weeks ago and was like "yup...kong vault. Yup, nice roll there..."
As for parkour classes--the guy who started parkour in my area (lehigh valley, pennsylvania) teaches weekly classes at a local gymnastics gym about twenty minutes from where I live, so I go up there every Tuesday night. It's a great environment to practice technique, condition, and solidify movement.
If you don't live in the lehigh valley, check around at your local gyms or maybe post on a forum to see if anyone else is doing anything similar to that.