Dan O'Brien
Dan O'Brien is credited on 2 movies and 6 TV shows, best known by TMDB votes for Grey's Anatomy, How I Met Your Mother and Law & Order.
Filmography · 8 titles
US streaming apps shown under each title, checked October 5, 2026. Tap any title for where it streams and what it costs.
Grey's Anatomy
2005 · TV show
On Netflix and Hulu
How I Met Your Mother
2005 · TV show
On Hulu and YouTube TV
Law & Order
1990 · TV show
On Netflix and Hulu
The Affair
2014 · TV show
On Paramount+ and fuboTV
American Housewife
2016 · TV show
On Hulu
Gunslingers
2025 · Movie
On MovieSphere+
Descendent
2025 · Movie
On Hulu and AMC+
Whitney
2011 · TV show
Not on a US subscription app
About Dan O'Brien
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.
Biography from TMDB, written by its community.