We’ve cheered on Elizabeth Warren through most of her journey from Harvard professor of economics to presidential aide, working to make her brainchild–the Consumer Financial Protection Bureau–a reality. So we were intrigued by this video of Warren taking questions about the new agency. It’s 27 minutes long, we know–but it gets more interesting as it goes. (Watch her ears perk up when a caller asks ab0ut this week’s foreclosure headlines.) If you’ve been wondering whether Wall Street reform had any teeth, Warren’s CFPB might be a place to start.