From Logitech, the NuLOOQ navigator and tooldial...

Mac OSX only. $149. I'd be interested to see a version for a PC -- and the ability to add new applications to the tooldial software.

"The goal of NuLOOQ is simple--to provide you with a better way to work with the core applications, Adobe Photoshop® CS2, Illustrator® CS2 and InDesign® CS2, that enable you to run your design businesses successfully."