Snapatar lets you update your Twitter profile picture using your webcam. Simply snap a picture, fill out your Twitter details and send the new image to Twitter. You can do this as often as you like. Your creativity is the limit.
Snapatar was designed by Roy Tanck, a free lance webdesigner, geek, entrepreneur and WordPress enthusiast from the Netherlands. He is the co-author of the book Byte-size Flash MX which deals with optimizing Flash files. He is also the developer of the FlickR and Photo widgets.