Hah, sorry about that rant, I was just messing around.
Though I was serious about the musings with regards to "Starbuck's child'. ...Which we all know the truth now anyways.
With regards to Billy being a Cylon, I feel that that possibility my be quite plausible. As, I think Trinity mentioned, he's out of our minds and off the "potential Cylon radar" for now, and would be a perfect candidate for one. We'll see.
Though with the current turn of events with what happened in the last episode it looks like they're putting BSG back into the old season 1-style format of "holy crap, Cylons! JUMP!". Hopefully the producers have a card or two up their sleeves.