Maths and Graphics are fun
CG - Maths http://acko.net/files/fullfrontal/fullfrontal/wdcode/online.html WebGL / Rendering techniques http://acko.net/files/fullfrontal/fullfrontal/webglmath/online.html
Posts
Simple explanation of Physics based motion in games
http://www.richardlord.net/presentations/physics-for-flash-games http://www.richardlord.net/images/slides/physics2007.swf