Hans Olsen's Boise film study

[Gulf of Misery]

I thought the video on http://www.1280thezone.com/film-study-h ... m/#respond was great. Hans Olsen explains some referee calls and plays. I am a big fan of byutv's After Further Review . I have only played backyard football so I don't anything about technique. It makes my appreciate how sharp and athletic these kids are.
I wonder if I associate with offensive linemen more now because I am fatter and use to being pushed around.