Let's share our finding on niconico and youtube here.

[Touhou] Bad Apple ＰＶ【Stylized Shadow Art】
http://www.youtube.com/watch?v=Sib2L6A6xgw

Currently my favorite.

I've been watching that Bad Apple vid a lot as well.

One thing that doesn't really grow old for me is this little animation, Draw With Me by Mikeinel.

The song used is Cherish by Ai Otsuka by the way.