Thanks so far all - I've read through your replies but I'll leave it a little while before I make any more comments - however, Zooey has asked that I inject some questions on her behalf (so as not to disrupt the TG-only view - thanks Zooey) - these are related to Ceera's reply:

Quote Originally Posted by Ceera
I certainly don't identify as 'a man who wants to just look female'. When I want to be Ceera, I become, in as much as is possible without surgical alteration, a female version of myself, with a rather different personality than my male side.
Quote Originally Posted by Ceera
Over the years, I realized there were a lot of other 'female things' that I enjoyed far more than a male is supposed to in our society. Women's clothes, makeup, jewelry, shoes... all those tangible things appealed to me. But it went further than that. I found I could roleplay a female character so convincingly that others, who interacted with e on-line for years, were solidly convinced I was a real girl. But it wasn't just me enjoying the clothes and accessories. Behaviors, attitudes and priorities shifted accordingly. It also didn't matter if the character I was portraying was straight, lesbian or a hermaphrodite (both gender's 'functional bits' in one body). My mind can shift and adapt freely between the gender roles.
Question from Zooey is: Here's what I don't understand (and see as something of a contradiction) here... Words like "want to be", "rather different personality", "transform", etc. To me, all of this sounds like a method-acting man who really likes acting like a woman.

Why should personality change in this way? If it's a genuine bi-gender or otherwise non-binary identity, the self should be consistent, should it not? I can understand wanting to change presentation, at least to an extent, but I do not understand personality changes.