There is always the elusive "chemistry" question. How would the interviewing manager and others feel about having you as a member of the department? How would you fit in with the rest of the team? This is akin to what consulting firms refer to as the "airport" test: Could I tolerate being stuck with you in an airport for several hours?
Perhaps the best advice is that because there's nothing you can do about it anyway, you might as well be yourself. There's something liberating about the idea that you don't really have to perform, to pretend to be something you're not.