I'd have to go with McCall and his internal circuitry running amok in Lewis/McCall II. I mean, really, how embarassing would that be to be Oliver and have to go back and watch that I'd rather get KTFO by Ottke 3 times in a row than get caught blubbering like a baby on national television.

A close second would be Cintron's booby boy tear shedding when he fought Margarito.