Of the more known/popular ones:
Sanchez vs. Gomez is one I like to revist... I probably know it punch for punch.
Arguello vs. Olivares, Morales vs. Pacquiao 1 and JMM vs. Terdsak.

Of the lesser known/unpopular ones:
Duddy vs. Campas, Olivares vs. Kazuyoshi 2, Quartey vs. Lopez and Cintron vs. Estrada.

When I just want a quick fix I've got a set of 1, 2 or 3 round fights I throw on.