This is a Spring/Ride Camera Rig utility that generates a dynamic camera rig. You can animate the "rideCam#MotionRig" cube and the camera will react dynamically.
This is a spin-off of the rig that Alex Alvarez builds in the Gnomon Dynamics 11 - Spring Effects DVD. Available for purchase at: http://www.thegnomonworkshop.com
Update 0.1: Added spring controls to parent cube for easy access..