Have clear personal standards:

This is a sleeper because, on the face of it, the question doesn't seem to have much to do with the immediate interview. Today, however, many organizations are looking for people who DO have standards regarding their personal and professional lives, who can articulate them clearly and concisely, and who live by them. In this case, the briefer, the better. "I delegate my weaknesses." "I don't take on projects unless I can give them 100% dedication." "I respond in specifics and avoid meaningless generalities." "I am committed to life-long learning and growth."

From: http://topten.org/public/AB/AB8.html