Heavy metal anthems

Now something for all you metalheads out there... We're starting with essential songs of heavy metal. Judas Priest are one of the first heavy metal bands, that's for sure, Iron Maiden took it to the next level, while Metallica fluctuated from heavy, to thrash and speed metal, and eventually even to hard rock. Personally, I've always favoutited Maiden's "The Prisoner" to hits like Run to the Hills and The Number of the beast, it's really a great passionate song, especially in this live version.OK Metallica and Priest's stuff here are pretty well know, but never out of date \m/

Three songs this time...

Which one do you like the most and why?
enjoy and discuss \m/