Monster, UFOs, etc.. Not really sure if you could do an elimination style game show. Maybe pick 6 or so former contestants (which MUST include Noah as the snarky skeptic) and put them in a Ghost/Bigfoot/UFO Hunter show format. At the beginning of the episode, Chris gives them the assignment (something suitably weird in a TDI sort of way...like alligators in the Montreal sewers, Bigfoot spotted in a hotel, the President is secretly Elvis, a haunted public bathroom, etc.) and sends them on their way. They have to prove or disprove whatever it is while the personal drama builds during the season.