Hey You Down There was a game played on both the British and American versions of Whose Line.
The game involved three players, one (Greg Proops, Steve Frost, or Denny Siegel) as the narrator and the other two (Colin Mochrie and Ryan Stiles) as the participants. The object was for the trio to improvise an old public safety film.
Greg showed his talent for narrating the film in the same style as the originals, but the major focus tended to be on Colin and Ryan and their physical comedy. As a general rule, if anything could go wrong in the situation, it would.