This might be a really long and controversial one. For me:

Bands:
AC/DC
Guns N Roses
Motorhead
Manowar
Pantera
Tenacious D

CDs:
Ayreon - The Source
Opeth - Blackwater Park
Metallica - Kill Em All
Metallica - Black Album

Songs:
Motorhead - Ace of Spades
Megadeth - Symphony of destruction
Judas Priest - Painkiller
Queen - Bohemian Rhapsody