If your current mouse is just too simple for you and you feel that you need a ton of buttons, why not try this one? The OpenOfficeMouse puts a whopping 18 buttons on a single mouse, blowing the normal button to mouse ratio all to hell.
All 18 buttons are programmable, so you can put whatever functions you want on them. The problem is that there are so many buttons you won’t remember which does what. But if you need a mouse that also looks like a calculator, this baby will cost you $75.