Not really, I prefer to code on my 13" MBP. I have 24" monitor but I rarely ever use it. Ability to lay back and put legs on coffee table are more important to me.
I'd be paranoid that the monitor would fall on me. That may be good thing though as I'd avoid procrastination to get out of the danger zone as soon as possible.
Sometimes, I work from patio while smoking a cigar. Other times, I just need to try out a new coffeeshop on other side of town.
Dental exam chairs can be quite comfortable. The ones my dentist uses are comfortable enough I've almost fallen asleep during cleanings.
Virtual desktops mostly solved the area problem for me: switching between code/result/docs is just a chord away. The rare situations where switching is happening all the time account for less than 10% of my usage.