Bigravity theory

Eh, I think that's a little premature. Plus I don't think you actually tried applying it; it doesn't look like he scores that high.

The worst thing I think I can say about this guy with my undergrad-level physics knowledge is that he's a self-promoter, to a degree that's kind of distasteful in pure science. But the idea is at least cute.

I don't immediately get how it's proposed that the two universes couple, though -- from the reference to dark energy and repulsion, I figured that it was a sort of gravitational repulsion, but then there are references to eliminating the need for dark matter, which provides a missing _attractive_ force. So I'd like to know a bit more.

Wonderful ad hominem attack. Now please prove how this man is a "crackpot" like you're so subtly trying to assert: http://en.wikipedia.org/wiki/Andrei_Sakharov

Prove it and I'll believe you.