They really did underuse his character on BSG, didn't they? It's a shame, I wanted to know more about the Fours (which is why I was happy that he got more screentime in The Plan). He was awesome in this episode. Very creepy in that calm kind of manner, same as he had when playing Simon. I want more of him in future episodes....

Surprise!Gabriel and surprise!John and/or surprise!Mary would be awesome, too. Having the concept of purgatory seems rather interesting to bring back characters that had previously died.