I'll answer my own question.. I ordered the "Facing Darkness" DVD.. Pretty good.. 45 minutes talking to Bill Rennaker and the North Florida Cave Diving folks.. Some nice footage and a good look at cave diving in general. A much better buy for my $25 as opposed to the $20 I spent for O/W 2. I've been interested in Cave Diving and this just made me more interested.. Not to mention, those guys are "local" (within 3 hours) of me.