WebUrbanist has a great list of 12 video games that will actually help you 'get' a life. Isn't that quite ironic? Usually it's the other way around.
Turns out lots of the games you associate with losers or people who have too much free time on their hands (except when 'you' play them, of course), are games that can be beneficial to you. You'll find Tetris on the list. There's FPS (first person shooter) games like Quake 3 and Killzone 2 for their insane speed that encourages a high level of hand-eye coordination. These are the games you want your brain surgeon playing in his/her spare time!
Roleplaying games like Warcraft and Fallout 3 are there and so is Dance Dance Revolution. Every game mentioned is backed up with things like "logical, scientific thinking and problem-solving abilities" and managing lots of short term goals is in line with Project Managers, for example. There's some other really cool stuff there, too, like talk of how the army has actually incorporated some aspects of a public Army simulator game into their real world training.