What is the strangest question you have been asked at a job interview?

The question wasn't strange, it was illegal. They asked my religion! I was like....wow ok that's unprofessional. I didn't say that but I wish I had. They only asked me that because they saw that one of my jobs was at a church at a day care. Just because I worked at this church doesn't mean I went there to worship you know? Just goes to show how careless and idiotic some employers are.