If you're in the Twin Cities and you have any kind of interest in making, hacking or DIY, you simply must attend Make: Day this Saturday at the Science Museum of Minnesota.
Learn more about Make: Day at the Science Museum's site... and if you run into GeekDad Dan or myself there, be sure to say hello.
Also, if you have any interest in hacking and making, be sure to check out local DIY organizations: Leonardo's Basement, Studio Bricolage, and our nascent hacker collective Twin Cities Maker.