The original NES Game "Mike Tyson's Punch Out". I got the super nintendo version, but it's not as good as the original.
The original sports better gameplay and it is more of a challenge and it's is a classic. Lots of internet lulz (read: fads) are from the original. It even has freakin Mike Tyson! ..and other awesome hillarious characters.
The music is epic.
Warning!: The game is difficult. But it's worth it! If you beat this game you can consider yourself an oldschool 'core gamer'.¨