Kermit "The Frog" Cintron leaping out of the ring through the ropes in the Paul Williams fight, ultimately stopping the fight.

Bernard Hopkins getting pushed to the canvas injuring his shoulder in the first Chad Dawson fight

Prince Naseem body slamming Cesar Soto WWF Brock Lesnar style

Oliver McCall crying in the Lennox Lewis fight

and of course Victor Ortiz giving Floyd Mayweather a flying headbutt in the grill then Floyd KOing an unprepared Ortiz after the ref signaled to fight on

Mike Tysons career.

1. Mike tyson bites off ear

America not being able to produce a world champion heavy weight...........not what you really meant i know.

Some things like, a para glider interrupting the Bowe -Holyfield III fight. Iron Mike biting the ear of Evander and spitting it one the canvass, The third man stopping the fight in Cotto vs Foreman only to resume the fight later on.