When 'Survivor' host Jeff Probst renews his contract, it's usually for two years (which comes out to be four seasons of the show). But when he renewed his contract with CBS and the show last week, he only renewed it for one year (two seasons). I'm not sure if this is because he doesn't want to commit to several seasons of the show or if it's a negotiating/contract thing. Could 'Survivor' continue without Probst as host? Or is he too big a part of the show?

'Survivor: Heroes & Villains' debuts on Thursday.