Exposing Revelation
The Wittenburg Door people have interviewed Barbara R. Rossing, author of The Rapture Exposed: The Message of Hope in The Book of Revelation and it's posted over at Real Live Preacher's Viva Books book review pages. Here's how she answers the first question:

The first sentence of my book is, "The rapture is a racket," and I think it's important for your readers to know that the whole rapture is a fiction. It was invented by British preacher John Nelson Darby in the 1830s as part of his system of biblical interpretation called dispensationalism.

Now if that's not enough to get you over there to read it, try this:

Well, it may shock some of your readers, but Pablo Richard draws an analogy between the Roman empire and American empire. Just as Revelation proclaimed that Rome's empire would soon end, so today, some people look to Revelation for encouragement to hope that the oppression they experience from globalization and the American empire will soon end.

And if that's not enough, I can't help you.