Richard Kind (Lucius Lavin) is the only actor to appear in both the original Stargate (1994) film and Stargate: Atlantis (2004). He played an archaeologist named Dr. Gary Meyers in the former.
Actress Julia Benson (Willa) will later play 2nd Lt. Vanessa James, one of the main characters on Stargate Universe (2009).
After sneezing, Lucius tells Sheppard that he has a potion to get rid of his cold in six or seven days. The common cold typically lasts for six or seven days.