This is the first episode in which neither Richard Dean Anderson (Jack O'Neill) nor Amanda Tapping (Samantha Carter) appear. Tapping was on maternity leave when filming took place and still receives a main cast credit.
This is the second episode to feature only two members of the original cast: Michael Shanks (Daniel Jackson) and Christopher Judge (Teal'c). The first being Prometheus Unbound (2004).
This is the first episode of this series with no involvement of any kind from Richard Dean Anderson. Anderson, who stepped down as the series lead and executive producer after season eight, made a guest star appearance in Avalon: Part 1 (2005), which is the season nine premiere.
First mention of the Ori.