while this special occasion may be a different thing, doing anything on the job that's fun otherwise may poison it forever.

think of playing wow ... for gold farming. or being a game tester? nightmare of a job.

another example: texas holdem. it may be fun playing with friends in your spare time, but i'm pretty sure it's a brain wreckingly monotonous chore if you have to do it for hours, 4 games open simultaneously at any time. not much fun in that.

assembly line working at foxcon suddenly sounds like a really diversified job.