I would like to bring your attention to a new indie game called
Faster than Light, or FTL. Basically, you control a ship that goes hopping around galaxies, pursued by a rebel fleet as you attempt to get urgent information to the last Federation stronghold. It's easily the funnest game I've played in a while, and it's only nine bucks! Watch the trailer, and if you like what you see, give it a shot.
Oh, and you're definitely going to want to play on easy, if only because of the final boss.