Added Processing code from Rajarshi Roy
Added link to original blog post
Applied bld's modifications
Applied latest changes from bld (http://arduino.cc/forum/index.php?topic=51873.msg387455#msg387455) including top centre and bottom centre regions, and a FPS counter in the middle
Remove the hard-coded screen sizes, use Processing's displayWidth and displayHeight. Move the serial port name and port speed to variables. Use P2D rendering mode for (hopefully) better performance and compatibility with the Retina MBP
(re-)enabled the 4 corner channels, disabled the top centre and bottom centre channels