Connecting a Camera to Max/MSP/Jitter

Andrew Benson over at the Cycling ‘74 site put together a really solid post on connecting a camera to your Max patch:

Making Connections: Camera Data

He covers the hardware requirements (cost, Quicktime drivers for mac users, and manual controls) as well as the handling you may want in your patch. What frame rate do you want to deal with? What are a few ways you could extract useful information from the feed?