lurking on blogs and found this:

https://www.youtube.com/watch?v=rT7AH4JyuNs

might be the best I've (personally) ever seen....

edit:

This guy's stuff is pretty great too!

https://www.youtube.com/watch?v=wsULj_Pn7eE

and part 2

https://www.youtube.com/watch?v=AqlFSbgKFvo

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Hell of a coolness!