When I saw there was a thread on "secular creationism", I thought it was going to be discussing something like this, but I was wrong. The idea of Nick Bostrom is kind of interesting: that we may be living inside of a computer simulation. What would be interesting is, maybe the person in the computer simulation who made us is also in a computer simulation, going back forever and ever.
I guess this would be a kind of secular creationism, since there would be no "god" in a real sense, just creatures creating other creatures.
Anyway, it's kind of interesting as a speculation.