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D. Neil Mark is a Canadian actor who has appeared in numerous film and television productions. He starred in The 6th Day (2000), Fear (1996), and Fly Away Home (1996). In addition to his film roles, he has appeared in various series, including The X-Files (1993–2018), Stargate SG-1 (1997–2007), and Smallville (2001–2011).
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|---|---|---|---|---|
| Movie | 2010 | Born to Raise Hell | Steve | |
| Movie | 1993 | The Substitute | Rusty | |
| Movie | 1999 | Y2K | Quantum Co-Pilot | |
| Movie | 1996 | Dead Ahead | Eric Payeton | |
| Movie | 2000 | They Nest | Harbor Patrolman | |
| Movie | 1995 | Deadlocked: Escape from Zone 14 | Cop #1 | |
| Movie | 1998 | Storm Chasers: Revenge of the Twister | 1st Crew Member | |
| Movie | 2002 | The Santa Clause 2 | Teacher | |
| Movie | 1997 | Contagious | Lab Technician | |
| Movie | 2000 | The 6th Day | Security Guard | |
| Movie | 2010 | Charlie St. Cloud | EMT | |
| Movie | 1999 | Turbulence 2: Fear of Flying | Naval Officer | |
| Movie | 1996 | Night Visitors | MP #2 | |
| TV Show | 2001 | Smallville | Lt. McNulty | 1 |
| TV Show | 1997 | Stargate SG-1 | Frakes | 1 |
| TV Show | 2001 | The Lone Gunmen | 1 | |
| TV Show | 2003 | Rockpoint P.D. | 13 | |
| TV Show | 1993 | The X-Files | S.W.A.T. Team Officer | 1 |
| TV Show | 2000 | Dark Angel | Checkpoint Cop 2 | 1 |
| TV Show | 1995 | The Outer Limits | Guard | 1 |
| TV Show | 1993 | The X-Files | Deputy Scott Kerber | 1 |
| TV Show | 2000 | Andromeda | Alexandros | 1 |
| TV Show | 1995 | Sliders | Stationary Biker | 1 |
| TV Show | 2008 | Fringe | ND Agent | 1 |
| TV Show | 1987 | 21 Jump Street | Scott Arbogast | 1 |
| TV Show | 2002 | John Doe | Uniformed Officer | 1 |
