idk if this has been posted but these videos are pretty much priceless.
http://youtube.com/watch?v=R5cVdKPfc5U
http://youtube.com/watch?v=96OljGZapv4
http://youtube.com/watch?v=SouTgWtWOOE
http://youtube.com/watch?v=uoxcZiWK79c&feature=related
theres more but these are the best ones i think ^^^^