where do I find realtime materials?

I know that this is a bit of a noob question, but I just can’t figure it out. I’ve seen all these cool demonstrations of the power of blender’s realtime materials, but for the life of me, I can’t figure out how to do anything more than a UV-mapped image texture. Could someone please point me in the right direction.

http://snailrose_dir.home.bresnan.net/materialpanel.html

To keep it short, you can now use the material panel to ‘spice-up’ the game engine graphics. Note, not all functions are supported. You also need to select ‘enable blender material’ from the ‘Game’ menu.