How would you prepare for your dream job interview?

I got a callback for a position I've been wanting for a while. I'll be re-playing "Confident" by Demi to stay focused until the interview. What would you guys do?
  1. Know yourself and why it's your dream job well and you'll have lots to talk about! Takes the pressure off of trying to come up with something on the spot.
    Mark Twain once said "if you tell the truth and you don't have to remember anything"
    Suggested by   @smmrnss
  2. Wear something you feel confident in
    Suggested by   @smmrnss