Hayes MacArthur is an American stand-up comedian, actor and writer best known for his television roles as Chad in Worst Week (2008-2009) and as Rex in Perfect Couples, from 2010-2011.
MacArthur starred in the feature film Life as We Know It, starring Katherine Heigl and Josh Duhamel, and can be seen in the DreamWorks comedy She's Out of My League, opposite Jay Baruchel.
MacArthur's additional television credits include guest starring roles on How I Met Your Mother, Pushing Daisies and Entourage.
He also starred in the pilot This Might Hurt, directed by Jason Winer, who also collaborated with him on the pilot The Adventures of Big Handsome Guy and His Little Friend, which MacArthur starred in, wrote and produced.
MacArthur became engaged to Heroes actress Ali Larter, his girlfriend of three years, in December 2007. On August 1, 2009, he married Larter in a small ceremony at his parents' estate in Kennebunk, Maine.