When the time-released self-destruct mechanism built into all PowerBooks and iPods inevitably kicks in (typically about three to four hours after you simultaneously try to write a best-selling novel, watch high-definition pornography, lay down some beats on your digital sequencer, keep up with three online social networking Web sites, and send an instant message to your friend about what you're doing right now), there's nothing quite as frustrating or humiliating as crawling into the Apple Store Genius Bar. For this reason, we love the PowerBook Guy, whose name conjures a shifty-eyed tweaker selling computers in a parking lot but who, in truth, offers some of the most honest, fair, and efficient Mac repair services in the city. He even sells refurbished computers at reasonable prices, absolving you of the need to break into other people's cars and steal their laptops when you're on an editorial deadline.