8. Led Zeppelin
We can debate all day about whether or not Led Zeppelin are an actual metal band. It'll get us nowhere. What's undeniable is the fact that generations of metal guitars worship at the altar of Jimmy Page. Also, the entire genre of music probably would have been a little different had they not created albums like Led Zeppelin II. That LP hit shelves a few months before Black Sabbath's debut, and both had an incalculable impact on the genre. The group split when drummer John Bonham died in 1980, but they've reformed for a handful of gigs over the years, most notably at London's 02 Arena in 2007. They rehearsed an elaborate two-hour show, but Robert Plant refused to take it on the road. And they haven't even released the video of the show they shot that night. C'mon guys, we're dying over here! Robert, you have to suck it up and spend just six months on the road with Zeppelin. We all do things in life we don't want to do, and you'll bring joy to millions of people. If you're reading this, give it some more thought.