KeyRemap4Macbook

[raine]

I didn't see it mentioned, so I recommend you check out KeyRemap4Macbook. It has some very useful features to improve productivity with keyboard, and despite the name, can be used on every keyboard as far as I know. I myself use it with Microsoft Sculpt keyboard.

These are my favorite features:

Simultaneous Vi mode means I can hold sd and use hjkl as arrow keys or go back and forward a word with ,.