|Born||April 16, 1977|
Chicago, Illinois, U.S.
Ali Larter (m. 2009)
MacArthur attended Deerfield Academy and received a B.A. in Government from Bowdoin College in Brunswick, Maine, where he was quarterback on the football team. He has studied at the Groundlings Theater Company and Atlantic Theater Company.
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.
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. Larter and MacArthur have a son born in 2010 and daughter born in 2015.
|2005||Open Mike||Mike Sheppard||Short film|
|Wiener Park||Dusty Wurtman||TV film|
|2006||The Adventures of Big Handsome Guy and His Little Friend||Guy Hansen||TV film|
|Are We Done Yet?||Jimmy the Bartender|
|The Game Plan||Kyle Cooper|
|2008||Lower Learning||Digdug O'Shaughnessy|
|2010||Life as We Know It||Peter Novak|
|She's Out of My League||Ron|
|2011||Answers to Nothing||Taylor|
|The Babymakers||Leslie Jenkins|
|The Motel Life||Officer Cook|
|2013||Another Happy Anniversary||Tom||Short film|
|2014||Someone Marry Barry||Rafe|
|A Haunted House 2||Ned|
|2018||Super Troopers 2||Mountie Henri Podien|
|2005||The King of Queens||Ed||1 episode|
|2006||Thick and Thin||Greg|
|2007||Curb Your Enthusiasm||Doorman|
|2007, 2009||How I Met Your Mother||Curt 'Ironman' Irons||2 episodes|
|2008||My Boys||Spike Upton||1 episode|
|Pushing Daisies||Buddy Amicus|
|2008–09||Worst Week||Chad||5 episodes|
|2010–11||Perfect Couples||Rex||Series regular, 13 episodes|
|2012–13||Go On||Wyatt||Series regular|
|2014||The Rebels||Rick Massella||1 episode|
|2016–present||Angie Tribeca||Jay Geils||Series regular|
- Carmack Bross, Judy (March 11, 2016). "Dispatch from Los Angeles, Part ll". Classic Chicago Magazine. Retrieved October 4, 2016.
- Dolce, Laura (August 6, 2009). "Actress Ali Larter weds in Kennebunk". The Portsmouth Herald. Retrieved October 4, 2016.
- "NBC Announces Pickup of New Comedy Series 'Perfect Couples' For 2010-11 Season" (Press release). NBC Universal. May 12, 2010. Archived from the original on May 14, 2010. Retrieved May 12, 2010.
- Kapos, Shia (15 March 2003). "Cynthia Wirtz MacArthur, 75". Chicago Tribune. Retrieved 4 October 2016.
- 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. Archived from the original on 2009-08-07. 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.