I've searched the interwebs for the best "MTB How To" Videos and these are my pickings:

The 1st Bunny Hop one ("How to Bunny Hop Your MTB"), the Wheelie, and PumpTrack videos are very well made. I love the production of the 1st Bunny Hop one. The music is great, he deserves an armature producers award!

http://youtu.be/Ge63xr9WteU

http://youtu.be/QiIunH47qew

http://youtu.be/mpYpT5Esl9w

http://youtu.be/gXc1_UF6xXg

http://youtu.be/fCIFTItyT0w

http://youtu.be/p3tVbO1jrmU