A good friend from college, @moswald, has been tweeting about this little game called Achron. Achron is a real time strategy (RTS) game with a huge twist. You can warp your units back and forth through time. Of course, being a geek I immediately wondered, "What happens if your unit goes back in time and destroys the factory that built it?"
Yeah, that's the "Grandfather Paradox" and these game designers are so cool they handled it. They even made a video explaining how it works in Achron. The game is still under development but it doesn't make the concept any less cool. Check it out.
Still not quite as cool as the "Component Rules Paradox" though.