No, not really. But someone edited concert footage to make it really seem so! Thanks to my friend Scott who forwarded this to me.

Metallica didn't really cover the Pokémon Theme...but it really looks like James Hetfield is actually singing and pantomiming the lyrics. Who knows? Maybe if this video really blows up, Metallica might include it in future live performances!

Kind of like that time the makers of XMen: The Last Stand actually included a line from a racist YouTube video.