This New Unification Theory looks pretty interesting. Worth keeping an eye on to see if he can actually test it properly. The notion of holistic beauty in simplicity would be nice... but I think unlikely...
I did not follow the link, but a URL supposedly linking to a physics site containing "joybringer", "gaia", and "mandala" can only lead to very scientific ... you know, stuff.
Garrett's theory is actually pretty old - I remember reading about this months ago. The issue, if I remember correctly, is that for his new theory to get on the road to being proven they have to discover like 5 more particles that he's predicting exist somewhere. So it might be a while before this is anywhere near proven.