You may be thinking I'm exaggerating. Not in the slightest.
I give you... METALLUST!
I discovered these guys 2 years ago while browsing Metallica videos on YT and I thought they were astounding. Even the vocals, which I thought could never be accurate enough to Hetfield himself, sounded great (and in some videos, spot-freaking-on!).
As a huge Metallica fan and appreciator of fine talent, I feel it is my duty to give these a little more publicity:
No Leaf Clover
Seek and Destroy
...And Justice For All Medley
If you can ignore the singer's sometimes very apparent accent, these are some amazing covers.
Here's hoping I reach out to at least a few! Enjoy!