1. Columbia Area Linux User’s Group

2.
Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.
Linux, Mac OSX, Windows

4. Berkeley Open Infrastructure for Network Computing
Open-source software for volunteer computing and desktop grid computing.
Many projects you can work on.

5. SETI@home Rosetta@home Einstein@home
Search for Extra-Terrestrial Intelligence
Helping to cure disease by resequencing Protein strings
The search for Black Holes by the radiation they give off.

9.
Bootable Live CD or DVD
Latest Version is 5.0
Has Most (if not all items you saw here and MORE!)
Great tool for Linux Advocacy
Based on Debian Distribution