"The Nox" marks the first time Teal'c is referred to as "Shol'va", meaning "Traitor". Teal'c also uses the phrase "I die free", which is later shown to be the unofficial motto of the rebel Jaffa.
First time the Goa'uld use a personal body shield, which allows slow moving objects to penetrate but is otherwise impervious to projectile weapons; this is similar to the personal shields used in the DUNE books.
The DVD episode order differs somewhat from the broadcast order. This was the seventh episode broadcast, but is Episode 12 from Volume 3 of the Season 1 box set.