Kick Ass Coverversions

hm about time to start a thread with coversongs that makes you go WTF???? either because they really blow dog and makes the original artis roll in his/her grave even if they ain't dead yet OR if they are so insanely good that they turned a normally average song into something really great...............

I am starting off with Finnish trash/powermetalgig Children of Bodom with a rather well known tune