The name on Agent Cross's jacket is P. Mullie. Paul Mullie wrote 49 episodes of Stargate, including this one. He was also executive producer/supervising producer/co-executive producer/producer/co-producer (148 episodes, 2000-2007)
Steveston, Richmond, British Columbia, Canada is used to represent Steveston, Oregon. This is the same town used as Storybrooke in Once Upon a Time (2011) and in Godzilla (2014) as the town where Lt. Ford Brody joins the nuclear bomb headed to San Francisco.
Quinn says that using stem cells to create a human clone is illegal. In Canada, that is true. In Oregon, there is no law (state or federal) against human cloning.
Director Peter DeLuise walks out of the diner @20:41.
The plot is similar to 1970 TV movie Night Slaves. A couple are in a small town. At night everyone except for the husband are affected by some form of hypnosis which turns everyone into sleepwalkers.