Refreshing, User-friendly Captchas

I'm tired of seeing most captchas - they make you strain to decipher numbers and letters that have been turned and twisted in ungodly ways ;-)

But, I have seen some captchas that are clever - they foil automation, but they are user-friendly.

These captchas ask questions like "How many months are in September?", "What day comes before Wednesday?" or "What is the opposite of North?"

That is very refreshing!