"So you're admitting that God & Jesus is a schizophrenic?"
Schizophrenic =/= multiple personalities. I don't mean to nag, but this is such a common mistake that it blurs what schizophrenia actually is, as if it wasn't unclear enough to begin with.
Not to say that a claim couldn't be made for Jesus being schizophrenic - some people with schizophrenia do in fact claim to hear voices, including what they say is the voice of God. I've in fact heard people suggest that Jesus was schizophrenic before, and while they clearly can't make a definitive case as such, the various paths of reasoning are entertaining and sometimes creative.
The suggestion of Dissociative Identity Disorder (the "proper" name for multiple personalities) is a new one for me, and while I could see some appeal to it, no way could science have "proven" such a thing. The truth is, even if we could see Jesus ourselves, making a diagnosis of DID would be extremely difficult, as the disorder itself is the subject of debate. In many cases it is very difficult to differentiate it from other psychological disorders, and it can also be hard to tell if a person is faking or not. There aren't a lot of well-documented cases, and those that are are almost entirely within the North American continent. There is some question as to whether it is a valid independent diagnosis at all (the doubters don't generally doubt something is up, but believe it could fall more cleanly under a better-understood disorder). So, contrary to Jalasian's claim, science could in no way prove that Jesus had DID, since science is not yet certain that there is such a thing as DID.
Still fun to speculate, though.