The Mathematical Universe
http://arxiv.org/pdf/0704.0646v2.pdf
Is "the theory of everything'' merely the ultimate ensemble theory?
http://arxiv.org/pdf/gr-qc/9704009v2.pdf
Shut up and calculate
http://arxiv.org/pdf/0709.4024v1.pdf
Good luck with the maths, I didn't get most of it. I agree with his general idea that "Our external physical reality is a mathematical structure." I tend to research different theories, and his stood out due to it's relation with the anthropic principle. Other theories/ideas you should checkout; Robert Lanza's
Biocentrism, John Wheeler's
It from Bit and Chris Langan's
Cognitive-Theoretic Model of the Universe (CTMU).