(Wait for the punch line and reactions at the end) Jimmy Kimmel was gracious enough to take a break from shooting Season 4 of "Who Wants to be a Millionaire" to terrify my son Ben with the story about the time Chris and Liam Hemsworth nearly caused a roof collapse in his office, triggering a fear of earthquakes. Also on goodmorningamerica tomorrow jimmykimmel reveals how much he really really hates Matt Damon, who he may or may not have called an imbecile. And more importantly has the latest news about his son Billy's recovery from heart surgery. #Millionaire #whowantstobeamillionaire #gma #jimmykimmel #mattdamon