I know you are probably looking for downloadable videos, but FIRST Objective has a lot of videos (mostly linked from YouTube). I don't think YouTube allows downloads, I may be wrong. Nevertheless FIRST Objective is a great place to find cool FIRST videos. Check it out.
http://www.firstobjective.org
Roger
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Roger Smith
Mentor - FRC Team 3357
COMETS - Creating Outstanding Minds, Embracing Technology & Science
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