Well, here I leave you my fav games (at least those I remember right now):
8 bits era:
Regarding the 8 bit consoles, I can tell you that by far practically the only and most used 8 bits console where I live was the NES; although it wasn't the real deal (all the consoles were a plenty of clones from Asian manufacturers) I had really good gaming experiences.
Double Dragon II: The Revenge
Snow Bros
Contra
Ghost 'n' Goblins
Mario Bros 3
Juju dentsetsu (Toki)
Goal series
Kunnio Kun series
etc.
Sega Genesis:
Sonic 3: The Hedgegod
Street Fighters 2: Champions Ed.
Mortal Kombat 2, 3, Ultimate 3.
Streets of Rage series.
Quackshot
X-Men
etc.
Nintendo 64:
Respect this one, sadly I only played a few games, because they were something expensive to adquire ( e.g. at least u$s 99 bucks to buy a "player choice" game like super mario bros) and they were hard to find too .
Super Mario 64 (surely the best plataform game ever)
Zelda: Ocarina of Times
Star Wars: Shadows of the Empires.
Mortal Kombat 4 and Trilogy
etc.
Maybe someone will think many of these games aren't good at all, but I really had blilliant experiences playing it.