I'm not gay or anything, but I think I jacked off more during Weidman vs Rockwood than any other fight in recent memory. Romero vs Weidman was pretty epic too. I also liked Sapp vs Nog if nothing else because Sapp is so big. And black. And dominating.
Never fapped to female fights. I just don't find women fighting, or women in general, sexy. Again, no homo.