HAHAHAHAHAHAHA
No way. I had to support Mac clusters at my school. If I was Director of IT and someone proposed a Mac cluster, I'd have them publicly flogged.
The only joy of working in one is watching people wander around trying to figure out how to turn them on. I would purposely turn only one on and put a broken chair at that location. Without fail, people would always choose that computer, sit in the chair, and warble around in it while they tried to work. Cracked me up.