Baseball Stars, Paperboy, and every Mega Man game... I played a lot of Marble Madness too. My mom bought me an NES for Christmas when I was 3 and I was already beating Mario and shit at that time. I have A LOT of memories with that Stadium Events game that used the power pad, also now one of the rarest games in the world.
http://en.wikipedia.org/wiki/Stadium_Events - some copies selling for 40k
edit: of course, I traded Stadium Events in at Funcoland a long fucking time ago, for like 10$ probably