An interesting set of movies explaining the japanese writing system and how to input it on a mobile cell-phone. If found those movies by the way of the Messy 78 blog.

The strange thing is the guy does does not use the completion feature of the phone, normally, you only select the kana column of each syllabe and the input method fingures out what you meant (like with T9), he dutyfully presses up to five times on the keys to get the right syllabe.