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Dan O'Brien (XXI)

Dan O'Brien is known for his work on Whitney (2011), Grand Theft Auto IV (2008) and The Delray Story (2011). See full bio »
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Scream Teens: Memorable Teens of Horror

As if high school weren't enough, these troubled teenagers have to deal with vampires, witchcraft, and maniacs. For more, visit our Guide to Horror.

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Known For

Whitney Mark
Grand Theft Auto IV
Grand Theft Auto IV Jay Hamilton
The Delray Story
Being Bin Laden
Being Bin Laden Al-Zawahiri


Hide Hide Show Show Actor (16 credits)
  Maybe There's a Tree (post-production)
Audience Member
 2016 Prosperity Lane (TV Movie)
Garfunkel Blakely
 2015 Grey's Anatomy (TV Series)
Keith Gardner
- Time Stops (2015) ... Keith Gardner
 2015 Cain Enabled (TV Series)
- Smart Money, Dumb Money (2015) ... Bill
 2015/I Astraea
 2011-2013 Whitney (TV Series)
- Cake, Cake, Cake (2013) ... Mark
- Alex, Meet Lily (2013) ... Mark
- Crazy, Stupid, Words (2013) ... Mark
- Nesting (2013) ... Mark
- Lost in Transition (2013) ... Mark
 2011 The Delray Story (Short)
Delray (as Daniel G. O'Brien)
 2011 Being Bin Laden
Al-Zawahiri (as Daniel G. O'Brien)
 2011 How I Met Your Mother (TV Series)
- Garbage Island (2011) ... Meeker (as Daniel G. O'Brien)
 2010 Delocated (TV Series)
- Tap (2010) ... Lon
 2010 Romantically Challenged (TV Series)
- The Charade (2010) ... Neil (as Daniel G. O'Brien)
 2010 Below the Beltway
Scott (as Daniel G. O'Brien)
 2008 Grand Theft Auto IV (Video Game)
Jay Hamilton (voice, as Daniel G. O'Brien)
 2007 Spinning Into Butter
Townie #1 (uncredited)
 2006 Law & Order (TV Series)
- Hindsight (2006) ... Delray (as Daniel G. O'Brien)
Hide Hide Show Show Miscellaneous Crew (1 credit)
 2008 Grand Theft Auto IV (Video Game) (motion capture performer - as Daniel G. O'Brien)
Hide Hide Show Show Self (1 credit)
 2002 Horns and Halos (Documentary)

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Personal Details

Alternate Names:

Daniel G. O'Brien

Did You Know?


He graduated from the University of Notre Dame in 1999.

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