What do you think about these videos?
http://www.youtube.com/watch?v=2ME8gEN54Ao
http://www.youtube.com/watch?v=LV8ZxGICsL0
http://www.youtube.com/watch?v=MQIAzzMDhSI
http://www.youtube.com/watch?v=pvv4uk9XbsY
http://www.youtube.com/watch?v=MwKRhwjRZnM
I Think these are some good Videos for the squat!