How about the Ultimate twist?!

Did you notice how old and decayed everything on earth was....even the radioactivity was low; How come? What if all the human colonies and the cylons originated from Earth....Not even M. Night Shamalalmadingdong could see that one coming. However it make sense; the murky past of the colonies, the ethnic diversities; (including the Cylons.) There seemingly always having been space travel and yet knowing about sailing ships; (Adama's model that he's forever repairing.) And Finally Bob Dylan's "all along the watch tower. They all originated from earth but left back in antiquity during a great atomic holocaust, perhaps the first great Cylon/Human war, but an ancient beacon is bringing them back to where the all belong. All that’s missing is something red. (Very few will get that last sentence, but what the hell)