I find it pretty annoying, not to mention pathetic, when a prank caller or a troll calls in just to mess with the show. Those guys are just incredible losers with nothing better to do with their time, clearly. I really hope that "Matt from Oslo" guy stops calling.
That said, I'm sympathetic to the difficulties the call screeners can have with identifying who is a prank caller and who is truly that stupid and inarticulate. They've said it before on the show, and it's true: no matter how ridiculous the caller may sound, there really is someone out there who believes that -- so you might as well address the point thoughtfully for those who are watching. Some of my all-time favourite clips from The Atheist Experience
actually involve some of the most idiotic-sounding callers, because the hosts actually bothered to give an insightful and meaningful response.
Remember when "Mark" from the Austin Stone Church kept calling in? For some reason, it was concluded that he was a fake, though I actually don't know why. He sounded pretty believable to me, although he was kind of a ridiculous guy. Honestly, though, I loved it every time he called in because of the way the hosts dealt with him. It actually resulted in what might be my #1 favourite moment of the show, ever.http://www.youtube.com/watch?v=Pf-4NJAYAvg