Have you heard of the SETI@Home project? Click the banner above to go to their main page, from which you can download a screensaver (for pretty well any platform) that will scour raw radio data for alien-type signals.
Andy Wallace set up a special group for Georgie's fans to join so that we could share the work (and glory) of making contact with the little green men. You too can be part of this crack team; simply follow the link below to join, or just have a nose at how we're doing: