Matthias Huber wrote in to tell us about his new iChinese system that helps you learn your characters. iChinese uses the iPhone's touch-based interface to teach users how to write the characters on-screen.
It's available by adding the http://ichinese.de/repo repository to Installer.app. I don't speak Chinese. I don't write chinese (although I'm very fond of chinese food). I wouldn't know an ideogram if I tripped on one, so if you give this a try and have an informed view on how useful it is, let us know in the comments.