SG-1 is the main "False-Gods" show, but in some cases it's a bit of a grey area - did the gu'auld start the whole god thing, or did they impersonate deities that the ancient religions had? Yu never even impersonated a god, but was an emperor.
SG-1 made it pretty clear on a number of occasions that the Goa'uld copied existing beliefs from Earth. Although from the chronology, it's possible that Ra the Goa'uld was the source of belief in Ra the deity, which is presumably what the makers of the original movie intended.