I spent 4 years work standing up, at a drawing desk - it was really great. I had a high chair to sit on if you needed to but most of the time I was standing with a pen in my hand and the board at a slight tilt towards me. I wasn't an architect or draughtsman so I wasn't using the t-square - just pen and paper, but I long for those days.

I never got tired because you move all the time, and I never had back problems. OK I was younger then.

I once saw a long since removed video of a touch interface demo'd on an A0 size table by a company that Apple subsequently bought (about 10 years ago) I'm wondering if they'll ever get round to producing that device for real - I'd certainly by a desk sized touch screen mac and get back to the good ol' days.