http://www.GameFAQs.com
For the past two years, GameFAQs has had contests in the summer. The contest was a bracket filled with 64 video game characters, and it was the people's job to vote which character they liked more in one-on-one battles. Not who you thought was more bad-ass, not who you thought was more revolutionary...just who you liked more. Link won it the first year, and Cloud won it last year.
With all that aside, there'll still be another summer contest this year between the characters. HOWEVER, this year will be the first-annual spring contest, where the brackets will be filled with games instead of characters.
If you check out the site's home-page right now, it will give you a link where you can nominate one game per system to be in this contest, but you have to be registered (it's easy to). By the beginning of March, the brackets will be up, and everyone who is registered will be allowed to make their official bracket-predictions on who'll win what. Then, in April and May, one battle a day will occur, and there will be a winner at the end of it to decide what is the "Best. Game. Ever." (you don't have to be registered to vote).
I just wanted to go ahead and point this out for anyone who's interested, because I'm really into this kind of thing and I'm sure I'm not the only one. A lil' early to post this contest that officially starts in April? Nah, I figured I'd give everyone some time to nominate some games.
Side-note: If you got no idea what to nominate for the Sega Genesis, think of Earthworm Jim.