Best Rock Cover Bands Found on YT

What's the most impressive cover band you've stumbled across on YouTube? There are hundreds, if not, thousands of house bands, garage bands, etc.,who have posted their stuff on YT - many of which who should have never been allowed to pick up their respective instruments - and there are some that are pretty good. Then there's those bands that literally make you say, "HOLY SHIT!"... you know the ones I'm talking about.
Discovered these guys last year some time. At the time of this video, the band's members ranged in age from 11-14... and don't make any assumptions about these kids. They're hands down the most talented trio of kids I've ever seen. Here's their cover of RUSH's YYZ followed immediately during the same vid of one of their originals performed at some outdoor event. Boston's own Mindwalk Blvd.
http://www.youtube.com/watch?v=197CCb3qz6I

Discovered these guys last year some time. At the time of this video, the band's members ranged in age from 11-14... and don't make any assumptions about these kids. They're hands down the most talented trio of kids I've ever seen. Here's their cover of RUSH's YYZ followed immediately during the same vid of one of their originals performed at some outdoor event. Boston's own Mindwalk Blvd.
http://www.youtube.com/watch?v=197CCb3qz6I