Seattle developer Damon Cortesi has written a great little perl script that will generate your Twitter Stats which you can be make into some cool graphs of using the Numbers app. Here are my current Twitter Stats.
You will need to know how to access a terminal and navigate the OS X filesystem, but after that it just takes one command to run. Mine took a couple of minutes to finnish since it needed to parse 93 pages of Twitter data, which I then just cut-and-past into the Numbers template that Damon provided.
