There are two things my Grandpa (A Joiner) used to say that stuck with me. A good tradesman never blames his tools, and money spent on cheap tools is money wasted.

I think Jeff has a point, I spend long periods at my desk and after having a few bouts of bad back problems I'm very selective about where I park my butt.

Jeff mentioned that he has used his chair for ten years. My grandfathers tools are still being used in our family 30-40 years after they were bought.

I think that people in the IT industry need to give there workspace as much consideration as what OS/programming language/Framework they use. You can always change your OS/language/framework but your stuck with your back and wrists for a lifetime!