Man there are so many that it's hard. But a couple that stick out are Tyson when he fought a guy who's name escapes me, one of his early, early fights. Is all I remember is he hit the guy so hard his feet looked like they came off the floor; I thought the guy would die. Then recently that Ding-a-Ling Wilson guy on Friday night fights absolutely destroyed Nwodo. I really thought that guy was going to r.i.p. My 3rd would have to be Oleg Maskaev k.o.ing Rahman through the ropes.