Ed has a very fine post up on his blog.
Excerpt below the link - hit the link for the whole highly recommended short post -
In discussing the Theology of the Body, one has to distinguish between (a) the doctrines of the Church, (b) Pope John Paul II’s teaching, and (c) the presentations given by teachers like Christopher West and others. It would also be helpful to see the Theology of the Body in the proper context.
One always has to remember that the Theology of the Body is a theological explanation of the teachings of the Church, and is not a new doctrine in and of itself. It is part of an effort by Popes John Paul and Benedict and others to propose a Christian anthropology of love that will provide a modern and accessible theological and philosophical explanation for the teachings of the Church. You have to view the Theology of the Body in that context.