Two jumps for me:
1) bone claws (x-men 25/wolv 75)
2) Origin/James Howlett (I feel like a tool just typing that name!)
Yes. That's the reason I say Wolverine died for me in 1993. It may have actually been a bit before that. I loved the Logan that was a struggling ronin aiming for samurai. In 1992, Mariko died, and that sort of ended that. After 1993, things just take a turn for awful.
certainly didn't help. They should have kept it mysterious. Plus, I think it was a pretty lame origin.