Katie Couric has reportedly been lined up as the next guest host of Jeopardy! following the death of Alex Trebek.The television and online journalist is apparently set to temporarily take over hosting duties on the popular game show as a guest host following the sad death of Alex, 80, who passed away in November after a battle with stage four pancreatic cancer.The news was first reported by the Los Angeles Times and comes as Jeopardy! bosses announced plans to have guest hosts lead the show