I have a theory to deal with the who "something from nothing issue" (assuming matter truly exists out of our [collective] conciousness). It works sort of like an infinite loop.
The universe works on a cycle. It begins, ends, begins, ends, begins, ends, ..., etc. It always has, and it always will.
Matter (again, assuming it exists), is made up of proto-matter (ie. sub-atomic particles [most likely smaller than the already discovered forms]). Proto-matter is created as a "left-over" of the ending of the existence of the universe. So, the lifecycle of matter is:
Proto-matter
Matter
Proto-matter
You could say that proto-matter begets matter, which in tun begets proto-matter.
There is no need for a creator, since existence creates itself (in a sense).