Web-controlled tweeting Roomba
There are three things that will guarantee your DIY project some attention: slap it on a Roomba, base it on Arduino, or make it tweet. Do all three and, well, you've got a nerdgasm-inducing bit of Make fodder. The creation you see above is a web-controlled tweeting Roomba whipped up by Instructables member matchlighter using a 500 series vacuum bot and the Sparkfun WiFly shield for Arduino. The autonomous cleaner can be triggered from anywhere there's an internet connection and updates Twitter to keep you abreast of its status (Ahh! Dock sweet dock). While Mr. matchlighter was kind enough provide directions for building your own, a lot of the actual coding is left up to you. (We're lazy, let us just copy and paste dammit!) If you think you've got the programming chops, hit up the source link for instructions and check out the original's Twitter feed at the more coverage link.

Update: The complete code is in step eight of the Instructable.