I once found a dentist chair at a thrift store near work. The colors matched exactly our company logo. I thought it would be an awesome workstation so I brought it into the office. Everybody loved it, took pictures of me working in it, and it was the conversation piece of the office for a couple weeks until facilities made me get rid of it.
It actually was the most comfortable workstation I've ever used, so I was excited to see this chair. I hope someday I can both afford it ($3,900) and be allowed to have it in the office.
Here's the actual site for the guys building it: http://www.altwork.com/