I've found a new, hobby, one that is possibly int he ultimate geek league - OpenStreetMapping.  This is an attempt to create a freely available, freely editable source of map data to all, in the same way Opensource software works (free as in beer).

There are several ways people can contribute, there's an online map editor, a downloadable java based client for editing, and a system to upload GPS tracks of areas, Yahoo have also geenrously allowed the project to use it's aerial photography to generate maps from.

You can see my tracks here and my userpage on the wiki here.

For those of you who don't know, BOINC (Berkeley Open Infrastructure for Network Computing) is a Grid computing application that grew out of the SETI@Home project from Berkley university in the good old US of A.

I Run BOINC, and currently provide computing power to SETI@Home to search for Aliens, Rosetta Stone to do protein folding for medical research, ClimatePrediction.net to model the future of the planet's climate and  the world community grid which doesmore medical research.

If you're interested, you can see the current stats for me here.  If you're really interested, you can download BOINC and help save the planet (or look for Aliens !)