"DVD" Jon Lohansen has been tweaking Apple for years. After breaking the encryption on DVDs, he went on to unscramble Apple's music store files, then its wi-fi media streaming, then virtual locks within the iPhone. Now he's got his own company, doubleTwist, whose mission is to connect non-Apple devices to your iTunes library — the same sort of trick the Apple-baiters over at Palm recently tried and then apparently gave up on.

In 2006, a hacker named DVD Jon cracked the encryption on Apple's music store files. Today he's pulled off a more tangible hack: Buying a billboard practically inside Apple's San Francisco store to advertise his "cure for iPhone envy."