Levar Burton
If an air of intelligence is something that the people behind Jeopardy! want from the next host, it's hard to think of another more fitting personality than the former Star Trek and Reading Rainbow star Levar Burton. Both roles have cemented Burton as a figure of intelligence and wit, while his role as chief engineer Lt. Com. Geordi La Forge on Star Trek: The Next Generation has given him serious nerd credit.
The only potential candidate who has the support of fans via an online petition, Burton has also previously expressed his interest in the Jeopardy! role.