Doug Brown from Toronto, Canada is a massive Metallica fan, maybe an even bigger fan than us.
He has one of the biggest collection of Metallica items in the world, ranging from CDs to vinyl, posters to concert books and clothing.
Doug has been collecting Metallica stuff since he was a teenager and reckons he has a collection of over 800 CDs and vinyl, followed by another 2,500 other items.
Doug isn't the type of guy who is happy with a CD from his local record shop. He wants that same CD from as many different countries as possible.
You wouldn't even bother getting him anything Metallica related because chances are he already has.