As an occasional watcher of Jeopardy, I think they are not planning on putting anyone permanently in as host until the Fall. They have until then to try various hosts (which reaps publicity unto itself), and review the ratings and other stats. The producers are always looking to expand their audience. They may be looking for a host that brings a younger demographic as their current audience ages out. I think they will also rename the studio after Mr. Trebek in the Fall - around the time the new host is in place. I am hoping that the writers keep up the tradition of one Canadian-based answer in every show as a tribute to the former host. And as for Dr. Oz - NO!!!