Stargate Continuum
Easily the Stargate episode of the gods – real gods, false gods, dead false gods or whatever other sorts of gods you feel like talking to – Continuum qualifies as some of the best science fiction ever devised. While its central premise of time travel and the paradoxes which would arise from such an enterprise will be familiar to anyone who’s watched the television series, it has bags of plot twists, several engaging sub-plots, a cast of actors who have totally surrounded their characters and a real nuclear submarine – apparently the US military loaned the production company a sub just ‘coz they liked the shows.
If you watch carefully, you’ll notice cameos from most of the major characters from the series – and even a fleeting appearance by the villain from the original 1985 theatrical movie, albeit with somewhat less hair.
The gods would be impressed.