The Carlyle Group, a large private equity firm, announced today that it is buying Manor Care, a large operator of nursing homes and long-term care services, for $6 billion. This got the good folks at Marketplace Radio to ask why private equity firms seem to be so interested in buying up health care companies. And the resulting radio story broadcast today brought together an unusual cast of characters, including myself and Michael Moore. Yes, that Michael Moore.

To listen to the radio interview, click here. To read the transcript online, click here.