I have a tendency to see myself in third-person in my dreams, but I don't usually take it to mean anything... however, there's gotta be a reason for the difference... I think that I dream in third person when I'm thinking about my own actions; I don't recall having a sense of touch in dreams, so I have to see myself from outside for what I'm doing to seem real. Instances when I'm dreaming in first person tend to have me as myself doing what I would naturally do... my actions aren't interesting, only what I'm acting on is.