There were a lot of cool things about the early 90s, but few made the impact on gaming that one spiky blue mammal did. Sonic the Hedgehog was SEGA's flagship product, and that original game was (and still is) amazing. Well, at GDC today SEGA broke the news that the original Sonic the Hedgehog is coming to Android in April. What's more, it has been completely remastered to be native on Android. My nerd heart sings, friends.
Update 4/9/13: Gameplay video.
Sonic was great because of the incredible sense of speed – something so few games (including recent Sonic titles) have managed to replicate.