The Steelcase Cobi, starting at $400, is unique in that it's a higher-end office chair that you get to customize quite a bit of how it looks—avoiding the late '90s dotcom sea of chairs that look exactly alike.
Here's what you do. Go to the site, then go through the "3 minute" process of choosing the frame color, whether or not you want a stool bit for your feet, whether you want arms, the upholstry color (lots of colors available) and you're done. Depending on what you chose you could be looking at a reasonable $400 chair or a slightly pricier $720.
Steelcase, like Herman Miller, makes fantastic office chairs that prop you up in such a way that you can actually sit for eight hours and not feel pain. Hit the gallery for more shots. [Smart Furniture]