That's what Dale calls "Left Behind", anyways. Thanks to TV Tropes, I found quite a hilarious list of articles (a loooong list) joyfully mocking these silly books.
Here's just a sampling of the nonsense:
"Buck, likewise, seems nonchalant about his appointment that same day with the Ten-Horned Beast from the Abyss. It wasn’t that long ago that these characters were all convinced that Buck only survived his conversation with Nicolae due to the defensive magic of their prayer shield, but now they just routinely hang out with the guy, imperturbed by his mind-reading and mind-control powers."
THE ECUMENICAL COUNCIL WILL EAT YOUR SOUL.