[C.R.E.A.M.]

Good points. I agree with your take on the negative/positive response of "I work too hard sometimes". I was thinking about saying something like that (and I have used it in the past at interviews for $7.50/hour part time jobs that I worked while in school with success), but the more I thought about it, the more I feel it just sounds so fake and sounds like such BS. I bet interviewers get that answer all the time.