This is a very interesting topic. Incidentally, I've been following Walid Shoebat in Youtube and and in his website. He said that the description of the Islamic messiah - the Mahdi - exactly fits that of the Anti-Christ of our Bible. Joel Richardson, in his book: The Islamic Anti-Christ compares the Bible and Koran on the issue of the Anti-Christ and his conclusion is the same: Our Anti-Christ is the same person as the Mahdi.
Read the book yourselves or watch Walid Shoebat and come to your own judgment. As for me, I tend to agree with Joel Richardson and Walid Shoebat because of the coherence with Scriptures.