After my first experience w/being called on I think it's a great idea. Lawyers should be competent to quickly articulate the law and their understanding of the facts. I did ok, got the facts right, but when I slowed (1sec pause) she called on someone with their hand up. Which brings up another topic, in my class at least if someone even slightly faulters in asking a question 10 hands shoot up to answer the question. I didn't feel bad but I can see where some would feel like they are being one-upped by their fellow students.