My first hard rock album ever. It holds up better than most people think.
Shot In The Dark, the title track and Lightning Strikes are all heavy as fuck metal classics. Secret Loser, despite the dumb title, just had that killer groove (back when it wasn't Slipknot faggots on pogo sticks) that just smashed your head against a glass table like William Holden. And Killer of Giants just might be the best epic Ozzy was ever associated with solo wise.
He's like "yo give me yo insurance information!" and I'm like "I didn't hit you with no car, I hit you with this mack truck I call a fist!"