What's My Line?
In 1980, Mark Goodson-Bill Todman Productions, creators of "What's My Line?", produced "That's My Line" which also highlighted the unusual occupations of ordinary people. However, the show was developed as a reality show and had no panel or game elements. "What's My Line?" announcer Johnny Olson was the announcer, and Bob Barker was the host for the show which ran for two seasons on CBS.
Colin Mochrie
On March 28, 2007, Mochrie and his "Whose Line" costar Brad Sherwood hosted part of the Press Correspondents' Dinner with the President. At that event, Sherwood and Mochrie featured Deputy White House Chief of Staff Karl Rove rapping. Rove's only line was "MC Rove". On August 29, 2007, it was announced that Mochrie would host the Canadian version of the game show "Are You Smarter Than A 5th Grader?". The first of five episodes aired on October 25, 2007. As a result, Mochrie became the fifth member of the American "Whose Line?" cast to become a game show host, after colleagues Brad Sherwood ("The Dating Game" and "The Big Moment"), Greg Proops ("VS.", "Head Games" and "Rendez-View"), Wayne Brady ("Don't Forget the Lyrics! and Let's Make A Deal"), and Drew Carey ("Power of 10" and "The Price Is Right").
Mochrie hosted the only season, consisting of five episodes, of Are You Smarter than a Canadian 5th Grader?, which began airing on October 25, 2007.