http://www.islam-exposed.org/index.htm
a few years ago, our imam told us of a book written by an arab christian. he was responding to the challenge in the quran to reproduce even a single ayat like the quran. he wrote a book called "al furqaanul haq" (the true criterion).
i looked it up, and its quite a laugh riot. first of all, its a complete copycat borrowing phrases out of the quran left, right, and center.
further, it is expounding christian doctrine which means t
he book is self contradictory since the writer cannot claim that it was divine revelation.