Well, I always see my characters as being facets of myself (and I may have said as much up thread, I forget), but I don't take it as far as "I'm literally playing me running through this campaign world". It's hard to imagine playing a character that doesn't in some way represent a portion of my own personality, the few times I have tried rapidly lead to disinterest.
I also think Damien still has a very clearly defined boundary between himself and Zuko, he seems to be the most aware that the things that happen to Zuko are not things being directly aimed at him. I think he's also the only one in the group who's not called Manny out on being a killer DM (which he can be at times), and again I'd attribute this to his much clearer boundary between IC/OOC.
Boiling Rock should be fun too, Suki will join the Gaang, which makes me wonder if she'll be an NPC or if there actually will be a new PC coming in. Also, wondering if these PC+Zuko episodes will be DM'd by Damien rather than Manny.
@MasterofAeons - I don't write anything, just enjoy picking things apart