As a fan of Jeopardy! going back decades, and as an avid listener to the podcast Ken Jennings used to host, Omnibus, I kinda thought I knew everything there was to know about the host of Jeopardy! , including a lot about his personal life. That is, until recently, when I saw an Instagram post from the game show host talking about this college roommate, fantasy writer Brandon Sanderson. In fact, Jennings even joked that he was the second nerdiest and second most successful person from that house they lived in together.