What are the best cubing tutorial videos online?

[pjk]

I'm looking to compile a list of the very best cubing tutorial videos for new members of the community for learning how to solve each puzzle. Please share what you think are the best for each:
2x2
3x3
4x4
5x5
Megaminx
Square-1
etc.

I'd like to pick 1 or 2 videos for each and include them in a welcome message for all the new members of the community looking to learn how to solve.

Thanks!

 

[acrystal]

JPerm Low Diff

 

[Tabe]

Everything on Cubeskills.com. Much better for beginners than JPerm.