I've become intrigued with learning a bit about mathematical structures which are used in physics, and I've stumbled across Garret Lisi's map of spacetime, gravity, physical forces and particles onto the E8 simple exceptional group. Titled "An Exceptionally Simple Theory of Everything" (the title is a bit of a play on E8). Here are a few links to study
An Exceptionally Simple Theory of Everything
E8 mapping project
Garrett's Blog
John Baez on E8 etc
E8 applet
Tony Smith on Lie Algebra
E8 from aimath
wikipedia
And here is the rest of it.
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