If you're crazy about Science you gotta have a look at SciFoo!

Here's an interesting website about the Science Foo Camp (SciFoo). 

About 200 leading scientists, technologists, writers and other thought-leaders gather at the Googleplex for a weekend of unbridled discussion, demonstration and debate.

To know more about the conference and watch lecture/demonstration videos go to: http://www.nature.com/natureconferences/scifoo/index.html