The 60's and 70's had real characters like the big bear Liston who scared the shit out of everybody, He KO'd Floyd Patterson twice in the first round, people literally shit themselves at the mention of his name. (Ali had big balls to take on Liston when he did) Then you had some old fashioned sluggers like Chuvalo, Bonavena and 'Our 'Enry' from Britain who always caused trouble without gaining any glory. The 70's again produced some big hitters with Lyle and Shavers, but it was the big names that were thunderous, Ali, Frazier, Big George, Norton and Holmes. Holmes dominated the early 80's against some reasonable pugs, but the 80's will always remain the era of Tyson.