Second — check out this mashup (I know, I know, but hear me out) from Sydney, Australia mashup specialist Wax Audio.
Featuring the track "Doin' It" from Herbies 1976 jazz/funk/fusion burner Secrets, and the title track from Metallica's third studio album (and major label debut) Master of Puppets (1986), this is one highly unlikely, highly enjoyable piece of work. It's like peanut butter and pickles. You want to hate it, but you just can't.
Wah Wah Watson vs. Kirk Hammett, you guys! Cliff Burton vs Paul Jackson. Ah man. Monday just got a whole lot better.