Muhammad Ali
Pretty Boy Floyd Mayweather Jr.
Mr. Iron Mike Tyson
Pernell "Sweetpea" Whitaker - without the coke..
Rocky Marciano
Roy Jones Jr. - Middleweight
Sugar Ray Leonard
Smokin' Joe Frazier
Tommy "Hitman" Hearns
Marvelous Marvin Hagler

no order of course

Most Overrated - fuckin Calvin Brock
My favorite boxer who wuzn't good enough to make this list - Kassim Ouma