Henchy is a writer who is most notably wrote screenplays for The Other Guys(2010), a comedy movie starring Will Ferrell and Mark Wahlaberg; Land of the Lost(2009) also starring Will Ferrell, and several episodes of Spin City.

He is also a highly successful producer who has produced hits such as the Funny or Die series (2010), and several feature films.

Henchy is married to actress Brooke Shields with whom he has daughter, Rowan Francis Henchy.