47. 'Kill 'Em All'
Check out that awesome band picture on the back cover – these guys looked nothing like Eighties rock stars. Instead, they looked like four shaggy headbanger kids with nothing going for them except the fervor of true believers. Yet that was enough to change the world. Metallica might have taken inspiration from U.K. bands like Iron Maiden or Diamond Head, but they channeled it all into something new and distinctive, in the speedy thrash riffs of "Hit the Lights – and that's exactly what it sounds like.