Current/Recent Past:
1. Roy Jones Jr.
2. Arturo Gatti
3. Wladimir Klitschko
4. Mike Tyson
5. Miguel Cotto

Past:
1. George Foreman
2. Joe Louis
3. Rocky Marciano
4. Roberto Duran
5. Sugar Ray Robinson

I could have gone with Hearns and Foster too...LOVE big power punchers, but the brawlers are great too.