Writing

2023

(1 episode) … Writer

2021

(1 episode) … Writer (1 episode) … Story

2020

(3 episodes) … Writer

2018

(10 episodes) … Characters

2014

(1 episode) … Writer

2008

(1 episode) … Story (1 episode) … Writer

2005

(3 episodes) … Screenplay

1997		The Visitor (2 episodes) … Writer
1997		Stargate SG-1 (214 episodes) … Writer

Production

—

(1 episode) … Executive Producer

2023

(12 episodes) … Executive Producer

2021

(29 episodes) … Executive Producer

2020

(10 episodes) … Executive Producer

2018

(10 episodes) … Producer

2014

(42 episodes) … Executive Producer

2008

(77 episodes) … Producer

2005

(3 episodes) … Executive Producer (0 episodes) … Producer

1998

(38 episodes) … Producer

Acting

1987

(11 episodes)

1986

(3 episodes) as Jeffrey Sullivan

1982

(1 episode)

1981

(2 episodes)

1976

(1 episode)

1974

(1 episode)

Directing

2023

(1 episode) … Director

2021

(6 episodes) … Director

2020

(2 episodes) … Director

2014

(6 episodes) … Director

2008

(17 episodes) … Director

1997

(1 episode) … Director

Creator

2023

… Creator

1997

… Creator

Camera

2014

(1 episode) … Director of Photography