Where to get footage????????

[Shokku]

I apologize if this question has been answered somewhere else, or if this is supposed to be obvious or whatever but I've searched everywhere and I can't find it, so here's the question.
Where do you get the HD, no sub clips for making these high-quality AMVs?
Like this Naruto AMV has great quality clips: https://www.youtube.com/watch?v=Wbo3NNvVqVk

[Radical_Yue]

http://www.rightstufanime.com/ or http://www.amazon.com/ are good.