Almost three years ago, I visited the Albright-Knox Gallery in Buffalo, NY (one of my most favorite art museums anywhere) and was surprised and amused by the 'Bureau of Workplace Interruptions.' It was a small side room in the galleries set up like a standard cubicle office. The premise was that you could sign up for the artist (Chris Barr) and his crew to interrupt your work day. Barr asserted that the working day becomes a mundane routine, and an interruption can actually add interest and make it much more interesting. Call it what you will (performance art/ fine art/ crazy), but I still remember this as a brilliant idea and a fun jab at the cubicle farms where many 'adults' spend most their time.
(photo credit: http://www.mississauga.ca)