- Films
- 20
- Avg rating
- 6.25
- Peak run
- 2019’25
Every film, by IMDb rating
The career
Dot size shows IMDb votes. Films with fewer than 1,000 votes sit on the baseline.
As an actor, films with 1,000+ votes
Mark by the numbers
Average
6.25
11 rated films
Vote weighted
6.41
bigger films count more
Median
6.0
half are better
Consistency
±0.95
rating spread
Career
18y
2009 to 2026
Total votes
1.36M
across every film
Best
7.9
Arrival
Worst
5.7
The Darkest Minds
Newest first
Filmography
| 2026 |  The Voices of Our Mother | William | · | 365 |
| 2026 | The Outer Threat | Daniel Ashford | 4.6 | 1,088 |
| 2025 | Topper | Topper | · | 85 |
| 2025 | Falsehood | Elizeus Carrier | · | 102 |
| 2025 |  Nuremberg | Colonel John Amen | 7.3 | 121K |
| 2025 | Shadow of God | Mason Harper | · | 959 |
| 2021 |  Blue Bayou | Ace | 7.1 | 11,953 |
| 2021 | The Righteous | Aaron Smith | 6.0 | 1,041 |
| 2019 | Hammer | Chris Davis | 5.7 | 1,318 |
| 2019 |  Ready or Not | Alex | 6.9 | 268K |
| 2019 | Goalie | Terry Sawchuk | · | 684 |
| 2018 |  The Darkest Minds | Rob | 5.7 | 41,034 |
| 2018 | Parallel | Josh | 5.9 | 6,332 |
| 2018 |  The Front Runner | Billy Shore | 6.1 | 15,170 |
| 2016 |  Arrival | Captain Marks | 7.9 | 882K |
| 2015 | End of Days, Inc. | Jason | · | 608 |
| 2015 | The Dark Stranger | Mark | · | 727 |
| 2015 | Len and Company | Zach | · | 675 |
| 2015 | How to Plan an Orgy in a Small Town | Bruce Buck | 5.5 | 3,918 |
| 2009 | Grown Up Movie Star | Will | · | 678 |
Better together?
Mark O'Brien's regulars
The number on the right is the lift: their average together minus the average of their two careers.
Takes
On Mark O'Brien
Information courtesy of IMDb (https://www.imdb.com). Used with permission. Ratings and votes as of the latest nightly refresh.