Dental exam chairs can be quite comfortable. The ones my dentist uses are comfortable enough I've almost fallen asleep during cleanings.

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.

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.