Across its 10-season run, SYFY’s beloved hit Stargate SG-1 tackled plenty of sci-fi concepts and tropes — but one of the best was arguably how the show introduced alternate universes to tell ...

Stargate SG-1 was in its eighth season when Black came aboard for a fun (and even funny) face-off against Dr. Daniel Jackson (Michael Shanks) as Vala Mal Doran in the episode “Prometheus Unbound ...