You can use it as a mouse pointer. check the dev thread, the driver for that has just been released. if you dont mind going through the hassle of installing two apps and running a third along with RR you can use it to control the RR media player (prev/next, vol up and down, play/pause) and anything else, could even make it do different things on different skin screens..
but no one seems to want to go the glovepie route for playin with it *shruggs* guess theyll just wait for the driver, and ill go use my space nav to control RR
oh and it wouldnt be but 4 lines of script in my script to make it act as a mouse pointer.. but thats not a lot of fun in RR