Deus Ex ALL FUCKING DAY and twice on Sunday please. To this day still the best video game I've ever played, ever. Everything about it from the story to the graphics, the gameplay, the mechanics, to the character design was just about perfect. And man the STORY...oh man, it's a cyberpunk opus of epic proportions and one that any gamer is bound to fall in love with quickly. Right next to maybe a few of the Final Fantasy games, this is in my opinion the absolute finest that storytelling in video games gets.
Sonic, great platformer. It was never quite on the top echelon though with Mario, always seemed to fall short. I loved the games, but none of them ever had even a fraction of the impact on me as Deus Ex did.
A vote for Deus Ex is a vote for the very idea of video games as art. Give 'er that vote, I implore you.