I do this somewhat, mostly its conversations in my head that come out half way like some of you or talking to the animals. Also ANYTHING I am trying to accomplish something with. I notice I do it more when I'm in a manic state as opposed to my usual depressed state. I also have conversations with the other representations of self I have developed (though Im not sure it would qualify as DID as I never feel I am completely someone else when I am one of my other personalities) Those guys do argue a lot though.

I find myself having one personality chatting it up with another quite regularly as they all have differing views on things and also using the others to talk myself into and out of things as well...