You lot already listed most of the exciting great fights.

Well here goes:

Sanchez vs. Gomez
JCC vs. MTaylor I
ODLH vs. Quartey
Arguello vs. Olivares
Barrios vs. Freitas
Gomez vs. Pintor
Gatti vs. Ruelas
Fenech vs. Nelson II
Chacon vs. Edwards II
Eubank vs. Watson II
Liles vs. Littles
Foreman vs. Lyle, Schulz, Stewart (Can't get enough of BIG George)
McClellan vs. Benn
Gonzalez vs. Carbjal
Holyfield vs. Ocasio, Bowe, Moorer, Cooper (Can't get enough of Holy)
Tapia vs. Ayala I
Arce vs. Hussy I
Lopez vs. Alvarez II
Castro vs. Jackson I
JMM vs. Tersdak
RMarquez vs. 'Too Sharp' I
MAB vs. McKinney
Moorer vs. Cooper
Cotto vs. Torres
Ali vs. Wepner, Chuvalo
Naz vs. Kelley
Duran vs. SRL
RJJ vs. Woods
Norris vs. Waters

I'll stop now.