Siri : Siri Personal Assistant App

Siri.com just launched its free app that turns your iPhone into a personal assistant. Want to plan a night out on the town? Just speak your wishes into your phone and the app will be able to make restaurant reservations, book movie or concert tickets and call you a cab—even after you've had one too many martinis and talk in drunkspeak.

Currently, the Siri team (designers and engineers from companies like Google, Yahoo, Apple, NASA, eBay, Motorola Netscape and more) is working to broaden the app's capabilities to handling flight stats, reference questions and eventually, even recommending a wine you might enjoy.