I had a thing about the Pedigree when I was younger. Now I can see that it's not that tough a move to protect yourself from, but when I was a kid I thought guys were genuinely getting planted face first into the ground.
We need to be differentiating between physical hurt and work incompacitation. I'm fairly sure Yoko landing on one's chest was quite painful even when guarded against right. He was no small man.
A properly executed Jackknife powerbomb looks like it could damage the lower back in work. We've seen the effects of it used when it shouldn't be, and that's real hurt. Even pulled off to a T I'd be willing to bet it more than stings when making that mat contact.
When Jericho was doing the Liontamer on the small cruiserweights , it looked like he was litterally breaking them in half .
The other one would be the piledriver that Scott Steiner used to do , it looked like he killed the motherfucker .