| Title (Year(s) of Appearance) |
Role |
Character |
| The X-Files (1993-2002) Credited in 9 season(s) and an additional 73 episode(s) | Created By | |
 | The X-Files (09/10/1993) | Writer |
|
| Season One (1993-1994) | Executive Producer |
|
| Deep Throat (09/17/1993) | Writer |
|
| The Jersey Devil (10/08/1993) | Writer |
|
| Space (11/12/1993) | Writer |
|
| Fire (12/17/1993) | Writer |
|
| Young at Heart (02/11/1994) | Writer |
|
| Miracle Man (03/18/1994) | Writer |
|
| Darkness Falls (04/15/1994) | Writer |
|
| The Erlenmeyer Flask (05/13/1994) | Writer |
|
| Season Two (1994-1995) | Executive Producer |
|
| The Host (09/23/1994) | Writer |
|
| Duane Barry (Part 1/2) (10/14/1994) | Writer, Director |
|
| Red Museum (12/09/1994) | Writer |
|
| Irresistible (01/13/1995) | Writer |
|
| Colony (Part 1/2) (02/10/1995) | Writer |
|
| F. Emasculata (04/28/1995) | Writer |
|
| Anasazi (Part 1/3) (05/19/1995) | Writer |
|
| The Blessing Way (Part 2/3) (09/22/1995) | Writer |
|
| Season Three (1995-1996) | Executive Producer |
|
| Paper Clip (Part 3/3) (09/29/1995) | Writer |
|
| The List (10/20/1995) | Writer, Director |
|
| Nisei (Part 1/2) (11/24/1995) | Writer |
|
| Syzygy (01/26/1996) | Writer |
|
| Piper Maru (Part 1/2) (02/09/1996) | Writer |
|
| Apocrypha (Part 2/2) (02/16/1996) | Writer |
|
| Talitha Cumi (Part 1/2) (05/17/1996) | Writer |
|
| Herrenvolk (Part 2/2) (10/04/1996) | Writer |
|
| Season Four (1996-1997) | Executive Producer |
|
| Tunguska (Part 1/2) (11/24/1996) | Writer |
|
| Terma (Part 2/2) (12/01/1996) | Writer |
|
| Memento Mori (02/09/1997) | Writer |
|
| Unrequited (02/23/1997) | Writer |
|
| Tempus Fugit (Part 1/2) (03/16/1997) | Writer |
|
| Max (Part 2/2) (03/23/1997) | Writer |
|
| Gethsemane (Part 1/3) (05/18/1997) | Writer |
|
| Redux (Part 2/3) (11/02/1997) | Writer |
|
| Season Five (1997-1998) | Executive Producer |
|
| Redux II (Part 3/3) (11/09/1997) | Writer |
|
| The Post-Modern Prometheus (11/30/1997) | Director, Writer |
|
| Chinga (02/08/1998) | Writer |
|
| Patient X (Part 1/2) (03/01/1998) | Writer |
|
| The Red and the Black (Part 2/2) (03/08/1998) | Writer, Director |
|
| The End (05/17/1998) | Writer |
|
| The Beginning (11/08/1998) | Writer |
|
| Season Six (1998-1999) | Executive Producer |
|
| Triangle (11/22/1998) | Writer, Director |
|
| How The Ghosts Stole Christmas (12/13/1998) | Director, Writer |
|
| Two Fathers (Part 1/2) (02/07/1999) | Writer |
|
| One Son (Part 2/2) (02/14/1999) | Writer |
|
| Milagro (04/18/1999) | Writer |
|
| Biogenesis (Part 1/3) (05/16/1999) | Writer |
|
| The 6th Extinction (Part 2/3) (11/07/1999) | Writer |
|
| Season Seven (1999-2000) | Executive Producer |
|
| The 6th Extinction II: Armor Fati (11/14/1999) | Writer |
|
| Sein und Zeit (Part 1/2) (02/06/2000) | Writer |
|
| Closure (Part 2/2) (02/13/2000) | Writer |
|
| First Person Shooter (02/27/2000) | Director |
|
| Hollywood A.D. (04/30/2000) | Actor |
Cinema Audience |
| Fight Club (05/07/2000) | Writer |
|
| Requiem (05/21/2000) | Writer |
|
| Season Eight (2000-2001) | Executive Producer |
|
| Within (Part 1/2) (11/05/2000) | Writer |
|
| Without (Part 1/2) (11/12/2000) | Writer |
|
| Patience (11/19/2000) | Director, Writer |
|
| Surekill (01/07/2001) | Writer |
|
| Per Manum (02/18/2001) | Writer |
|
| This Is Not Happening (Part 1/2) (02/25/2001) | Writer |
|
| DeadAlive (Part 2/2) (04/01/2001) | Writer |
|
| Three Words (04/08/2001) | Writer |
|
| Essence (Part 1/2) (05/13/2001) | Writer |
|
| Existence (Part 2/2) (05/20/2001) | Writer |
|
| Season Nine (2001-2002) | Executive Producer |
|
| Nothing Important Happened Today (Part 1/2) (11/11/2001) | Writer |
|
| Nothing Important Happened Today II (Part 2/2) (11/18/2001) | Writer |
|
| Trust No 1 (01/06/2002) | Writer |
|
| Provenance (Part 1/2) (03/03/2002) | Writer |
|
| Providence (Part 2/2) (03/10/2002) | Writer, Director |
|
| Improbable (04/07/2002) | Writer, Director |
|
| William (04/28/2002) | Writer |
|
| The Truth (Part 1/2) (05/19/2002) | Writer |
|
| The Truth (Part 2/2) (05/19/2002) | Writer |
|
| Millennium (1996-1999) Credited in 3 season(s) and an additional 7 episode(s) | Created By | |
| Millennium (10/25/1996) | Writer |
|
| Season One (1996-1997) | Executive Producer |
|
| Gehenna (11/01/1996) | Writer |
|
| The Well-Worn Lock (12/20/1996) | Writer |
|
| Lamentation (Part 1/2) (04/18/1997) | Writer |
|
| Season Two (1997-1998) | Executive Producer |
|
| Season Three (1998-1999) | Executive Producer |
|
| Taotwawki (10/16/1998) | Writer |
|
| Antipas (02/12/1999) | Writer |
|
| Seven and One (04/30/1999) | Writer |
|
| Harsh Realm (1999-2000) Credited in 1 season(s) and an additional 4 episode(s) | Created By | |
| Season One (1999-2000) | Executive Producer |
|
| Pilot (10/08/1999) | Writer |
|
| Leviathan (10/15/1999) | Writer |
|
| Inga Fossa (10/22/1999) | Writer |
|
| Cincinnati (05/12/2000) | Writer |
|
| The Lone Gunmen (2001) Credited in 1 season(s) and an additional 1 episode(s) | Created By | |
| Season One (2001-2001) | Executive Producer |
|
| Three Men and a Smoking Diaper (03/23/2001) | Writer |
|
