followup thoughts: the novelty of something new in the workplace (like a new desk, new chair, new location, or new computer) always wears off, diminishing some of the positive effects it's had. standing and moving around for 8-12 hours a day might introduce new problems or ailments, but there's no way those problems will be worse than sitting, curled up in a chair-jail for 8-12 hours a day.

here's my setup:

anti-fatigue mat http://www.amazon.com/Sublime-Imprint-Anti-Fatigue-Comfort-N...

monitor wall mounts http://www.amazon.com/gp/product/B001DKMO0A

adaptor to run extra externals from my macbook pro http://www.amazon.com/gp/product/B002GHBW4S