Does it hurt your brain to look at the picture above? That'd be Chromium OS -- running on a MacBook Air! Pretty much the definition of "worlds colliding," this feat is brought to you by Hexxeh, whose most recent mind-warping project put Google's operating system on an iPad. The platform-mixing maestro says in this case everything works except Bluetooth, owing to a lack of support. But hearty souls who seek to follow in his footsteps, take heed: there's no dual-boot option, and you will lose OS X -- so perhaps this is a job for your