Well I think you may get a good idea of who believes in what in this topic here.
http://www.ffnet.org/forum/philosoph...vers-1090.html
But if you specifically meant only Jesus Christ, I do not believe.
Or at least, I do not believe in him as the portrait given in The Bible.
He might have been a real man, but I think that, if he was real, the whole ideas behind his mythology (That is, to perform miracles and whatnot.) is a great misinterpretation on behalf of mankind's ignorance of many things in that period of our history.
It could have been many different and complex explanations, like it might very well have been nothing at all, despite the conviction of his existence. Many huge things may spawn from a single fact..