10 Most Underrated Stargate Episodes

10. Memento - SG1

Robert Foxworth is one of those dependably great guest stars, appearing here as Ashwan, the leader of a world that SG-1 and Prometheus discover, due to an accident while testing the Prometheus's new hyper-drive engines. After initially being taken as a threat, the team are then welcomed to the planet, though they fail to find the Stargate they were expecting.

The planet has flourished in the previous 300 years, though O'Neill and Teal'c both speculate that it was at that time that the planet was freed from Goa'uld control - something that historians have tried hard to remove from their past.

The episode serves as a cautionary tale for those who refuse to remember their history being doomed to repeat it. The fear of the Stargate drives many of the locals to mutiny and sedition, while those more open minded individuals eventually win the day.