There is a series of metal that sounds like other metal on youtube. However, it is slightly unfair because it tends to nail different thrash bands chugging on an open E (or D or whatever they are tuned to) which is just a standard thrash move.
If you haven't,take a listen to the two songs i mentioned above.It's kind of creepy.But yeah some metal bands tend to do that.I guess it's more in the style,opposed to coping directly from a song.
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It's an image worth pondering for a moment. Maybe, when you cut past the instrumental and songwriting virtuosity, the funny voices and characters, what is left is a man alone in his recording studio for days at a time.