This admission will probably take away from my sexiness quotient, but I can't help who I am. .
Starbuck saw her own body inside the Viper. She proved it was actually her because it had her dog tags.
Leoben, who has been her journey guide, actually got scared and ran off at the sight.
Starbuck supposedly isn't the 5th cylon though, she is "something else" or the Harbinger of Destruction
In this case, no he didn't. When she mentioned the Hybrid on the base star had called her "harbinger of death" he visibly flipped.
She ended up burning the body and hasn't mentioned it to anyone yet.
I have a feeling that both Kara and Ellen Tigh are Cylon skinjobs.
Yes, I know there are supposed to be twelve Cylon models...but there were also only supposed to be twelve colonies of Kobol.