Brad Wright:(On casting Stargate SG-1) That was a tough process. Of course, John Synes suggested Richard Dean Anderson to Jonathan and me when we were first conceiving the series. And we both thought, that's our O'Neill. As far as the other characters were concerned, we held auditions in Toronto, Vancouver, New York and LA. But speaking for Jonathan and myself, the moment we saw Amanda Tapping, Michael Shanks, and Christopher Judge we knew we had our SG team. And also when we were writing the character of General Hammond, we were already writing it for Don Davis.