Damon Cortesi just shared a handy script for grabbing your tweets and compiling some stats about when you post to twitter and who you reply to.
His script generates a list of numbers and included a Numbers template to paste them into. Since I don't have Numbers, I've modified his script to write a file that can be read by gnuplot, and wrote a basic gnuplot script to output an SVG file version of the stats.
While I was at it, I changed it so it no longer counts "@someone" separately from "@someone:".
Both scripts are right here - gnuplot_twitterstats.tgz
Here are my stats: Sorry, it looks like your browser doesn't support SVG. You're really not missing much. Click here for a full-screen version.