Microsoft Natural Wireless Laser Mouse 6000
Takes some getting used to, but once you are used to it then you will love it :)
The Microsoft Natural Ergo Keyboard 4000 comes in a cutting edge design and improved performance. It also has email and internet hot keys and helps ease stress on your wrists.
My favorite mouse ever made! I love the two scroll wheels the top and bottom. I also loved the internal battery and you can recharge it really easily!