There are many fascinating movies, books and TV shows about versions of history which could have been. From the "feel good" lessons of "It's a Wonderful Life" to the terrifying "The Man In The High Castle," this theme makes us ponder both regrets and miracles. On episode 415 of "Hot Media," Host Bob Mann and his guest, Professor Paul Levinson, talk about Paul's upcoming online presentation about this subject. Bob and Paul also discuss the latest news coverage, Twitter and old-time top-40 radio.