This thread, as far as the ones I've read so far, contains the most insightful and relevant arguments I've read to date. I think the theories presented here are bang on.
It's interesting to note the following lyrics of the song, as posted above:
"No reason to get excited," the thief, he kindly spoke,
"There are many here among us who feel that life is but a joke.
But you and I, we've been through that, and this is not our fate,
So let us not talk falsely now, the hour is getting late."
If you really listen to what Lee Adama was saying on the stand, I believe he was essentially saying exactly that (although by other reasoning in this thread, I'm calling him a Thief, which is to say he's a Cylon, and I do not believe he is a Cylon.) I just think those 4 lines sum up what he said about the current state of their human race, ie: "you want to call Baltar a traitor, then call me a traitor, and the president, and the admiral, etc. Enough is enough, we've been through that, everyone was forgiven, let's move on."
I think the writers have used that song all along as the basis for the evolution of season 3 and the outcome of the season finale. RDM says that the 2 hour movie will be about the Pegasus, but will hint at things to come in season 4, and I think they'll use that song somehow. But, as pointed out, when actual lyrics are used as dialogue in the show, and the relations of the Thief and the Jokers as mentioned in the original post... I think the writers heard that song, interpreted the definitions of the 2 classes, and very creatively built the season around those lyrics.
In the link to the RDM interview, there's this snippet:
R: Now there are two half-human, half-Cylon babies -- Hera and the Chief and Cally's child. Will you be dealing with that?
RM: Oh, yeah.
R: Are there other half-human, half-Cylon children?
RM: You never know.
Ummmm... did anyone else catch that? If Admiral Adama is a Cylon (as so many people have speculated, and there's a darn good chance they're right).... wouldn't that make Lee a half-human, half-Cylon child? Perhaps the oldest one... perhaps the first one!
Remember when #8 (Lucy Lawless) saw one of the final 5 and said "Forgive me, I didn't know" (or something to that affect). Maybe she was looking at Lee.
Hmmmmmm.....!!!!!
I could be way off base, but no matter what, this thread is great, especially the original post. Well done!