Dave Mustaine posted a picture on Twitter of all of the Bill O'Reilly books that he had read, and then asked if O'Reilly would advertise the new Dystopia album on his show. O'Reilly agreed, and played a portion of one of the music videos at the end of his show. Here's a link with a video from the show.
http://www.metalinjection.net/metal-in-the-mainstream/bill-oreilly-acknowledges-that-megadeths-dave-mustaine-acknowledged-him