Question: American actor and producer, as well as series eight regular in Stargate SG-1, began his television career playing who in the series General Hospital?
Sentence (from "Stargate SG-1 (season 8)"): The season arc centers on the growing threat and seemingly final defeat of the Goa'uld and the Replicators, races who were introduced in the first and third season of the show, respectively.
Relevant evidence: No