Well, in the Pilot we didn't know that Joe would become important except in the last moments when he fell and had the Pink Stars seizure.
I liked that he was the first to go looking for a power source, before any adult thought of it. I always love nerds/geeks, what can I say?
Oddly enough, in my memory Joe was the first to seize, but on re-watch I realize that was actually Norrie.
Angie's line about the goldfish is now classic, setting the stage for the entire series imo.
