interesting thread!
it reminded me of a public speaking class i took last year. All of our speaches we did had to be videoed which we were then required to watch and critique. it was SOO hard not to be overly critical of myself but of all the classes I've ever taken, that was the one where I experienced the most personal growth. I decided that my observations had to come from a loving place and that I would stive to focus on my abilities and not who I was at the time. I was at a very emotionallyraw place at the time too so it was such a push to do the class.
Because of that, I think it's a great experience to watch/hear yourself. It gives you a more objective opinion of who you think you are and how you appear to others and allows you to correct your behaviours that you didnt really notice before. it can be a bit humbling too