I have recently explored the Vizzie modules, and they are great fun! I know Max and MSP, but have not worked with Jitter previously.
I notice that video processing is intense work for the computer, and if I add more than one module, the frame-rate goes noticable down, to maybe 5 fps. What hardware specs are required for video processing? My machine is an old macbook, 2gb ram, 2ghz Intel Core 2 Duo, GMA 950 graphics card. What do I need to upgrade?