How to Answer 'What's Your Dream Job?'

It's important to be able to articulate your dream job. Not just for personal reasons, but also for when you're asked about it in interviews. But, how can you even begin to describe your ideal job, especially to someone who's clearly going to be judging your response? Just picking a place to start is a head-scratcher.
Here's a hint. Career counselors like to think about good jobs as the intersection of your skills, interests, and values. That's a good way for you to approach it as well. Talking about your skills will give you an opportunity to sell them a bit — after all, it is an interview. Your interests will show your investment, and your values can help illustrate your fit with the company.