Computer Vision Applications
I'm doing research on computer vision and we have a few point grey cameras. They're not really aimed at consumers, and are definitely not "webcams". Vision researchers like to get uncompressed raw data from the camera at as high a resolution as possible. Good luck to anyone trying to do any significant processing at those kind of rates though...
One thing it could be useful for is industrial measurement stuff - say you've got parts shooting through on a production line that need measuring. By tracking the parts through the image you might only need to process a small region of the image, but the very high resolution would mean you can maintain high accuracy with a large field-of-view.