George Alexander "Alex" Trebek will be 76 in July. He is signed as 
host of Jeopardy! through 2018.

The TV game show Jeopardy! was created by Merv Griffin. The original daytime
version debuted on NBC and aired until January 3, 1975. A  weekly nighttime
syndicated edition aired from September 1974 to September 1975, and a revival,
The All-New Jeopardy!, ran on NBC from October 1978 to March 1979. A daily syndicated version premiered on September 10, 1984, and is still airing, making
it by far the program’s most successful incarnation.