Pacquiao’s knockout of Hatton is unforgettable, but others stand out too. Mike Tyson’s first-round demolition of Michael Spinks in 1988 showcased his ferocity. Muhammad Ali’s "Phantom Punch" against Sonny Liston in 1965 remains iconic for its controversy and speed. And who can forget George Foreman’s brutal KO of Joe Frazier in 1973? Each defines an era of boxing brilliance.