StarTech.com Wireless Presentation Remote with Green Laser Pointer - 90 ft. (27 m) - USB Presentation Clicker for Mac and Windows - Batteries Included - Wireless Slideshow and Volume Controls - Vibrant
Logitech Presenter R800 And R400 Demo on Mac OS X - YouTube
Logitech Wireless Presenter R400 (Black) Remote
Logitech R400 presenter with Keynote on Mac works | Pim's Blog