http://www.youtube.com/watch?v=mYKLvYGqaC0 I don't listen to Tool or anything, but I'm more just really impressed by these kids than anything.

I also really like this cover of Sweet Child o' Mine

Lastly, this cover of the song Home by Edward Sharp and the Magnetic Zeros is adorable. http://www.youtube.com/watch?v=L64c5vT3NBw