People who rehearse and memorize these things, I have a genuine question.
How do you avoid sounding "too rehearsed" when you memorize answers like that?
My basis for memorization is it allows for a smooth start with what you about to convey, you can vary your tone, speed, emotion without having to remember what you planned to say. At this point in the interview, the nerve factor is at its highest and it is easy to forget important material. Once the session gets to the interchange between interviewee and adcomm, you tend to relax a bit and bullet points are the best tool. Well timed and appropriate humor is important. Just as adcomms use questions to lead to other questions, the interviewee can lead the panel to strong areas of their applications. There are some areas you just need to have ironed out...euthanasia, slaughter, etc and be prepared to back up your position.
You only get one chance at first impressions. If I was an adcomm and the interviewee couldn't handle the "tell us about yourself" question, I would be left to wonder whether they were too nervous to communicate or had not prepared for the interview.