Happy birthday, Genesis! That's right, the Sega Genesis officially turns 24 today. On August 14, 1989, Sega released the Genesis to the North American masses, and we've been in love with the system ever since. Sure, it had a rough life, having to eventually carry the 32X and Sega CD on its back, but we still think it's one of the grooviest systems ever. We even ranked the best games for the system. To celebrate this Genesis milestone, let's take a look at the 15 Greatest Sega Genesis Ads. SEGA!!