Patrick Rafferty's company works with health care firms, nonprofits and other organizations to create award-winning commercials, public service announcements, documentaries, marketing videos and more. Over the years, he’s interviewed numerous celebrities — everyone from Wyclef Jean to Ross Perot, Bill Gates to Hillary Clinton, Val Kilmer to Quincy Jones — and counts among his clients Discovery Communications, the Centers for Disease Control and Prevention, Georgetown University, the National Institutes of Health and Walt Disney Pictures.