I've had to do plenty of interviewing in my career — part of the deal when I’ve had to move around following my wife. I consider myself a pretty good interviewee, but I learned a whole lot from reading through this useful post:
As with everything in life, think hard about how these may apply to you. For example, I spend more than a minute or two on the inevitable “Tell me about yourself” question. I’ve done a wide range of things in my career and I try to pull out tidbits from my past which are pertinent to the job I’m interviewing for. I’d guess I usually spend between three to five minutes on this one.
Regardless of that example, take a gander at the post. It’s a very worthwhile read.