[xyience]

I just ask the interviewers how much freedom they have in the interviewing process (usually it's pretty clear) and whether they would do something different or not if they could. This kind of follows naturally from questions about non-dev responsibilities that devs have. A lot of fellow engineers at my current company believe their little quizzes actually have a lot of signal value when they really don't, I avoid working with them since they tend to have other weird beliefs. If my interviewer is giving me a whiteboard problem somewhat reluctantly because it's what he's supposed to do rather than what he'd like to do, he's probably OK to work with. The followup question is then whether I'd be working with him or not, since so many of these companies just throw you in an interview loop with whoever is available that day...