Forget Aeron, here's the best programmer's chair in the world
b7og.com
b7og.com
the backsaver zero-gravity line is not as flashy as the one in TFA but it allows locking the recliner at any angle you want, not just 3 pre-set ones.
A backsaver will run $1000+ new, and the one in the TFA is probably more; if you want to try the idea out you can get a cheap lawn chair version for $65 on Amazon: http://www.amazon.com/Strathwood-Anti-Gravity-Adjustable-Rec... (I've tried that one too, and IMO it's a great value, although even more limited to "reclined" and "not reclined").
I stopped coding in a recliner since it was too hard to add a 30" monitor to the setup in a cubicle environment.
I can see the appeal of being able to recline while contemplating something but as a person who almost instantly falls asleep when horizontal, I wouldn't get much contemplation done.
After mounting half the datahand on each arm of the easy chair, and reclining, I figure I'd have reached the ultimate nirvana of ergonomic computing. Unfortunately, I'm still a long way from being rich enough to justify dropping $1K on a friggin' keyboard.
The positions where you are actually sitting either supports you, or put you in a position that lets your spine stay upright and well supported.
sure you can customize it every imaginable way, still it's conservative and quite static chair, and it wasn't that comfortable for really long hacking sessions
http://www.mobilewhack.com/new-gravity-balans-recliner-from-...
Apparently there are only 250 pieces made.