So many: - Distributed stock market. By using colored coins, for example Bitshares, Protoshares, Zerocoin and Mastercoin. - Distributed Document registry and

So many: - Distributed stock market. By using colored coins, for example Bitshares, Protoshares, Zerocoin and Mastercoin. - Distributed Document registry and notarization. - Market prediction applications (distributed consensus) - Foreign Currency transmission (you can move dollars, euros and yens using bit coins). Look into the Ripple project. - Scientific data mining. Using currency mining to solve scientific problems. For example, the Primecoin project. - Stateless companies: http://firstblockchain.com http://firstblockchain.com - Online lotteries - Online giveaways - Micro-crowdfunding - Content monetization - Machine to machine payment - Distributed digital signatures - Stateless IDs, passports, etc - Corporate memoranda automation - Government transparency projects - New Internets (Public and private). See the Namecoin project I could go on forever, but I hope you get the picture. Bitcoin is truly disruptive. @jordhy