Second month of my standing experiment and I love it. Right now it's a temporary setup so I have my keyboard and mouse on a desk pad on top of a plastic file drawer for height. A gel standing mat for comfort. But when I get the chance I'll upgrade to a more permanent solution.
Here's my dream setup:
[] http://store.steelcase.com/products/airtouch-height-adjustab...
[] http://www.amazon.com/Embody-Chair-Herman-Miller-Adjustable/...
[x] http://www.amazon.com/Sublime-Imprint-Anti-Fatigue-Cobblesto...