Just a couple I've pulled down so far.
http://www.youtube.com/watch?v=C0VvIptQcPw
http://www.youtube.com/watch?v=mtAWABeTGMg
http://www.youtube.com/watch?v=tCD6ZBwkQMY
http://www.youtube.com/watch?v=IjWB5vQDweo
http://www.youtube.com/watch?v=C0VvIptQcPw
http://www.youtube.com/watch?v=mtAWABeTGMg
http://www.youtube.com/watch?v=tCD6ZBwkQMY
http://www.youtube.com/watch?v=IjWB5vQDweo