1. I think Starbuck and Baltar are half bro/sis AND they are Hybrids. They either share a cylon mom or dad. I'm thinking dad because of the music connection. That is why Baltar has a 6 in his head and why Starbuck is re-incarnated.
2. My other thought is that all of the people are either half or full cylons. Which would explain how they share dreams and how Baltar is in 6's head.
I guess we will find out tonight and no mater what happens we won't be happy.
