General relativity is the cornerstone of cosmology and astrophysics. It has also provided the conceptual basis for string theory and other attempts to unify all the forces of nature in terms of geometrical structures.
I'm shooting in Brooklyn, we've got all kinds of crap going on, and I'm all alone now in a big hotel suite that you can't believe the size of it and a thing sticks in my foot and I just think it's the funniest thing that's ever happened to me.