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Found 5 films with cast matching "Mark O'Brien"
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Dennis
Dennis
2015
Mark O'Brien
as Dennis
 Wanderer
Wanderer
2015
Mark O'Brien
 Snarbuckled
Snarbuckled
2010
Mark O'Brien
as Jacob O'Higgins
 Heartless Disappearance Into Labrador Seas
Heartless Disappearance Into Labrador Seas
2008
Mark O'Brien
as Charlie
 Breathing Lessons: The Life and Work of Mark O'Brien
Breathing Lessons: The Life and Work of Mark O'Brien
1996
Mark O'Brien
as Himself
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