I was as well. They are good at playing the minor variations in character. Also, Mann and Pace manage to pull off two versions of themselves in the episode Long Ago and Far Away (Episode 8? or is 9?) and I was amazed.

I'm on the fence about the actor playing Dawn though...

Admittedly, I've always been a Lee Pace/Terence Mann fan. (Yes, I love lesser known actors, who I have to hunt for.)