Greg Kinnear portrays Bob Kearns in "Flash of Genius," which opens this weekend. If you don't know who Kearns is, you're not alone. Most people don't. But he created something that is as much a part of our society as the remote control: the intermittent windshield wiper. His powerful (and very true) story are told in Kinnear's latest film, for which Kinnear had to pack on the pounds. Listen to him telling Jeffrey about it here.