On Friday, Alex Trebek set a Guinness World Record for the "most game show episodes hosted by the same presenter (one show.)" He's been the host of TV's Jeopardy since its re-launch in 1984 for a total of 6,829 shows. And each new show he hosts will increase the record number, making it tougher for anyone else to break his record.
At age 73, Alex Trebek is still under contract to host the show until 2016, but he denies plans to retire any time soon. Jeopardy is in its 30th season, with season 31 due to begin in September.