Well, The spin-off on the Passion movie keeps growing bigger. Publishers Weekly's Newsline has an article "Passion for 'Passion'? Tyndale thinks so"about the money to be made from book
on this. (I know, I know: it always boils down to money! ) I went to the home page for Publishers Weekly and could not readily identify a link to the article in the e-mail newsletter so here is an excerpt. (The article didn't give the title of the book, but it is featured on the front page of Tyndale House's site. Start saving today!

"The evangelical publisher Tyndale House says it has printed nearly 200,000 copies and has even entered allocation mode because of interest in its four-color--and frequently graphic--tie-in. "One thing that's unique is that there's an unprecedented amount of churches buying out entire theaters. What we're waiting for is churches buying the book in bulk and giving it away," says Tyndale's marketing and business development executive Dan Balow. "

The article also provided a link to a 60 Minutes Program "The Rise of the Righteous Army." about Evangelical America and the Left Behind Series.
Since this period corresponds with my naptime I didn't see it. I notice the link mentions a free video.