Right on, South Park!

Their depiction of John Edward as a douche was right on. John Edward is not a real psychic and the only way that he's able is to guess at which of the audience members in each taping of Crossing Over have lost a loved one and who the respective loved ones were and all that other information is because the producers get that information from the people in question before they are invited on the show and then pass it on to John Edward. Humans cannot communicate with the dead, and just like many other reality shows, Crossing Over is completely fake despite the disclaimers given before and after each episode.