I once had a friend who was legitimately offended at the sheep dying and I had to calm him down. I watched this one as a kid, before I even had the game. It's a classic.

I'm floored.

I played this one a lot when I was a kid. Shooting a zombie right in the dead center of its head and watching both halves fall clean off is very satisfying. There isn't much variety other than the changing backgrounds and outfits on the zombies, so it can get pretty repetitive, but shooting zombie heads mid-air to maintain a combo is timeless.