Christian Apologetics, Computers, Puzzles and Brainteasers, Creation and Intelligent Design vs. Evolution, Optical Illusions, Paradoxes, Logic, and . . . like that.
How does that story go where he's talking to someone who says, "Why does it have to be 'Either Or'? Why can't it be 'Both And'?" Then he says something like, "So you mean its either 'Either Or' or 'Both And.'"
That would be http://bobmosblog.blogspot.com/2006/11/ravi-debates-buddhist.html