Go here and register: http://Qik.com - the application however is only for jailbroken iPhones (check the tutorial section on how to free your iPhone!)The program allows live video streaming from your iPhone!It only works over wifi or a 3G network.The application can be downloaded from their site or from the Cydia installer on a jailbroken phone.Got Questions?I got answers!
Here are a few screen shots of the program: