Right this moment, there are people hollowing out a mountain in Nevada to build a clock that will tick for 10,000 years. If that blows your mind, we should meet up. The clock is designed to promote long-term thinking. It's a project of the Long Now Foundation, a non-profit that counts Stewart Brand, Brian Eno, Danny Hillis, Kevin Kelly and Paul Safo among its members. More information here: http://longnow.org/
Disclaimer: This group is not formally affiliated with the Long Now Foundation. We're just very big fans.