I've heard people do it, but personally I couldn't imagine how I'd pull it off. Most of my workday (when I'm not slaving away for the Weblogs, Inc. overlords here) is spent in an open office, and so even if I did find the time to squeeze a little adventuring in between my actual work, I have so many people looking over my shoulder that I'd get caught before long. Of course, when I am supposed to be writing for this site, I'm usually playing WoW anyway, so that evens out, I suppose.
It seems, though, that if British cops can get away with playing on the PSP at work, WoW is just a sneaky laptop away. So some of you out there must be playing WoW at work right now (don't worry, we won't tell your boss), but how are you possibly pulling it off? Are you just letting it run while you do actual work? Or finding some time on your lunch break to level a little? Or are you all out hacking and slashing your way through Azeroth while a conference call goes on in the background? There is always the argument that playing WoW makes you more productive, but somehow I don't think my boss would buy that.