If you remember one of the best video game-related movies of the 80's, The Last Starfighter, you might be interested in checking out Make Magazine's blog. 

It appears that the game is real, even though it was never produced, and if you don't mind messing around with an emulator, you can download it for free, try it out, and maybe even be drafted into intergalactic warfare. Well, not too sure about that last one, but it's a free legal game with a major retro coolness factor.