Recommend chair to comfortably support my hacker ass for 12+ hours a day?
clord: The best thing for your back and posture is to stand (with occasional resting on a stool). Many professionals stand while they work, and I try to do it when I can too. It's good for the circulation and it keeps you focused on your task. That's because if you're bored, you won't play flash games; instead you'll want to take a short walk. I think it's because it's easy to go wander off if you're already standing.These guys make fantastic standing desks, but they can be a bit pricey: http://www.standupdesks.com/My day job has adjustable desks that go to standing height.