Dan O'Brien
Biography
Dan O'Brien is an actor, known for Whitney (2011), Grand Theft Auto IV (2008) and The Delray Story (2011). He graduated from the University of Notre Dame in 1999.
Known For
TV
Grey's Anatomy
Keith Gardner
2005
TV
Law & Order
Delray
1990
TV
How I Met Your Mother
Meeker
2005
TV
The Affair
Seth
2014
TV
American Housewife
Daniel
2016
Film
Gunslingers
Josh
2025
TV
Whitney
Mark
2011
Film
Descendent
Christian
2025
Film
Occupant
Frank
2018
Film
Astraea
James
2015
Film
Brand New Old Love
Thom
2017
Film
The Delray Story
Delray
Filmography
2025FilmDescendentas Christian2025FilmGunslingersas Josh2018FilmOccupantas Frank2017FilmBrand New Old Loveas Thom2016TVAmerican Housewifeas Daniel2015FilmAstraeaas James2014TVThe Affairas Seth2011TVWhitneyas Mark2005TVHow I Met Your Motheras Meeker2005TVGrey's Anatomyas Keith Gardner1990TVLaw & Orderas Delray—FilmThe Delray Storyas Delray