Buck,
I asked one of the OR's in my recruiters office if they knew of a pilot in town that I could snag an interview with. Naval aviators are rare in Colorado mind you. They set me up with a reserve pilot who filled out the appraisal sheet after a 10-15 min chat in the hallway. Personally I think it made a difference because it displayed my ability to go the extra mile and my desire to become an aviator.
To answer your question, I would say the interview appraisal sheet. Another thing that I did was type out the appraisal sheet after he wrote it up and returned the next day to have him sign it. Go through and look at the appraisal sheet and see what they are judging you on and try to think of some of the normal and off the wall questions that he/she might ask you. I wore a shirt and tie and got a hair cut the day before. Good luck, be confident.