Show Me a Man Who's Angry...

...and I'll show you a man who cares. It works in nearly any context. The only trick is that by 'angry' I don't mean someone who just gets mad when it's his or her issue (i.e. a dispute about pay, sick days, leave, etc.) I mean show me a person who gets fired up about the job itself and I'll say you've got a quality employee on your hands.