'Jeopardy!' has missed the mark with guest hosts so far

Longtime Jeopardy! host Alex Trebek left a gaping hole in the show when he died last November. Perhaps it's unfair to say this, as no host will be able to capture Trebek's magic, but the guest hosts vying for his replacement so far have...well, not been magical at all. 

The past and future Jeopardy! guest hosts haven't...