Nothing to match legendary series such as Ali-Frazier and Holy-Bowe, since the HWs weren't up for much, but in the lower divisions - Jesus Christ. Vasquez-Marquez Morales-Barrera JMM-Pac (first two) Corrales-Castillo Gatti-Ward DLH-Mosley The 40's and 50's had some legendary ones as well, but just perhaps does the first decade this millenium have even them beat in this sense. What say you?
