BSG finale: what I expect

There are a number of questions that require resolution in the next two hours. And some gaping plot holes that will take everything the newly-revived writers have to fix.

How were there two Thraces? (R. thinks that the twist ending will be that everyone is a cylon.)

What's with the cylon homeworld? It never came up before. Where did it come from? Why was it never mentioned? Why can't we all go live there?

Where do the humans go? They have to go somewhere, after all.

Hera had better serve as an important plot point for something more than her stem cells. (Relatedly: why can't we just cure cancer now? Why is it still even an issue? And on the subject of scientific questions that Balthar has already solved, why did they abandon the fully functional and accurate cylon test from season one?)

Sam is going to... wake up? It's pretty obvious that, since he's already wired into Galactica and all the plot points are set up, he is going to jump Galactica to the cylon fleet (or homeworld). And then I think that the "grand goodbye" the admiral has planned is that he's going to drive Galactica into the other fleet and crash it into their ships. This was foreseen in some recent episode, in shots of Hera playing with the tiny strategic ships they have in the CIC, and... driving Galactica into the other fleet and crashing it into their ships. This might be how Hera is important. She can see the future. Or something.

Boomer has to be explained? ... or it could just be left that she's a crazy flip-flopper.

More to come at commercial breaks. (Note: they're having the actors reflect on BSG as a life-changing experience. Best comment: everyone else is talking about love, friendships, and work experiences... Sam says, "It's great to be on BSG. Because chicks dig cylons.")