Hober Mallow wrote:
there's never any mention of George ever being named Sam Francisco
I believe there is a single reference to it, albeit an obscure one. In at least one episode, George has a "I Love San Fransisco" mug which has been altered to say Sam.
I remember the scene with the mug, but I don't remember it having been altered in any way. It's been so long since I've seen it, though, I could be wrong.
I do remember one movie element that made it into the pilot episode before being dropped for the rest of the series -- Sike's name meaning "excrement" and "cranium" in Tenctonese. Johnson brought back the joke for "Millennium," which he wrote, but no other Alien Nation writer ever brought it up.