Andrew Robson videos.
http://www.youtube.com/watch?v=rViLJfN3vck
http://www.youtube.com/watch?v=3DQ2K2rwnL8
http://www.youtube.com/watch?v=bowR-Zv5BuU
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Slam Bidding Videos
http://www.youtube.com/watch?v=LDrlzijgLG0
http://www.youtube.com/watch?v=aVDK1hJJJCg