just got the above mouse, incredible. it is a 4 in 1: presenter, mouse, laser pointer and a media remote controller. it is bluetooth (the dongle can be paired with other bluetooth devices, like my pda) it is easy to use (right out of the box) and the set up it quick and simple (once you actually get it out of the sill, yet cool, yet hard to open packaging).
1. non directional control thanks to blue tooth. this remote is 100x better than the one that came with my laptop
2. one button push changes the device from mouse to presenter
3. easy set up and brings immediate productivity with little experience curve needed