And now, since I'm on a kick, YouTube footage of the original John Madden Football on the Sega Genesis. If I recall, this game first appeared on computers, in a much different and weaker form. It was the Genesis port that changed everything for the better, quickly sending Electronic Arts towards dominance in the console market, and ushering in a new generation of exciting sports games.
C'mon, be honest. Most sports games before 1990 sucked. You can count the good ones with the fingers on one hand.