These links takes you to the Sony Professional YouTube channel, where there are multiple brief videos covering 3D concepts, including;
Older, more technical or anecdotal videos
Alan Turner on 3D Rig/Processor
The World’s first 3D Outside Broadcast Truck in Action
World Cup 3D convergence (technical)
Camera Dual Control (technical)
3D Director Bruno Hullin (brief interview)
3D Camera Operator Interview 1 (brief interview)
3D Camera Operator Interview 2 (brief interview)
http://www.youtube.com/user/mysonyprofessional#p/u/0/a2KT1I_3YU4