Your Future Ex@loewe and @DXMacGuffin ask for #ReverseCovers in #FridayMetalCovers. Again, I took the challenge literally:
Rob Scallon: Enter Sandman
YouTube
Deus Ex MacGuffin 
That's pretty amazing! I imagine it would be incredibly difficult to reverse a song like this.
Here's a mashup by Rock Sugar. The vocalist for this band is Jess Harnell - voice actor of Wakko Warner from Animaniacs. Supposedly they were sued by Steve Perry, who thought they had used actual audio clips of his singing in the track.
ROCK SUGAR-Don't Stop The Sandman
@DXMacGuffin @loewe Listening to this cover reminded me of this fine collection:
Every James Hetfield "Yeah" in songs
@DXMacGuffin @loewe Rob is a mad genius, I'd love to have him here, announcing his crazy videos