Pie context menus

http://jonoscript.wordpress.com/2008/10/28/pie-in-the-sky/

http://people.mozilla.com/~jdicarlo/piemenus.html

Orge 3D

Open source 3D engine
http://www.ogre3d.org/
Graphics books
http://www.ogre3d.org/index.php?option=com_wrapper&Itemid=137

Tracking children's usage on linux

http://torvalds-family.blogspot.com/2008/10/tracking-time-kids-spend-online.html