April 16, 1977 |
Early life 
MacArthur was born in Chicago, Illinois. He attended Deerfield Academy and received a B.A. in Government from Bowdoin College in Brunswick, Maine. He has studied at the Groundlings Theater Company and Atlantic Theater Company.
Acting career 
In 2005, MacArthur co-wrote, produced and starred in a 16-minute short film, The Adventures of Big Handsome Guy and His Little Friend, with Jason Winer. The short was produced as a pilot for TV in 2006. He also appeared as a waiter in the episode of Curb Your Enthusiasm where everyone chooses Larry's wife over him after the break-up. In 2007, MacArthur appeared with fiance Ali Larter in National Lampoon's Homo Erectus, and also appeared in a comedic supporting role in the Disney movie The Game Plan. Along with recurring roles on the television shows How I Met Your Mother and Worst Week, he appeared in supporting roles in the 2010 films She's Out of My League and Life as We Know It.
In May 2010, NBC announced that MacArthur would star in the upcoming television series Perfect Couples. The half-hour romantic comedy premiered in the second half of the 2010-2011 TV season. The show was cancelled in May 2011.
Personal life 
MacArthur became engaged to Heroes actress Ali Larter, his girlfriend of three years, in December 2007. On August 1, 2009, MacArthur married Larter in a small ceremony at his parents' estate in Kennebunk, Maine. On July 20, 2010, it was announced that the couple were expecting their first child. Ali and Hayes welcomed a son, Theodore, in December 2010.
- "NBC Announces Pickup of New Comedy Series 'Perfect Couples' For 2010-11 Season" (Press release). NBC Universal. May 12, 2010. Retrieved May 12, 2010.
- Chiu, Alex (2007-12-17). "Heroes Star Ali Larter Gets Engaged". People. Retrieved 2007-12-18.
- Garcia, Jennifer (2009-08-03). "Ali Larter Weds in Maine". People. Retrieved 2009-08-03.
- "Heroes Star Gets Hitched". Sky News. 2009-08-03. Retrieved 2010-06-28.
- "Heroes' Ali Larter Ties the Knot!". Us Magazine. 2009-08-01. Retrieved 2010-06-30.
- Michaud, Sarah (2010-07-20). "Ali Larter Is Pregnant!". People. Retrieved 2010-07-20.