I couldn't agree more. My favourite questions are along the lines of "What technology are you most experienced with? Can you explain it's architecture to me?"

I couldn't agree more. My favourite questions are along the lines of "What technology are you most experienced with? Can you explain it's architecture to me?" and "What is the most complex customization you did to an existing library/framework? Can you explain how (and why) you did it?" They're completely scripted questions but tell you much more about the candidate than doing an algorithm pop-quiz.