Jack is a trekkie and makes a one line riff on Star Wars sucking in comparison. It was an offhand joke so I'm pretty sure they had at least the first film in Stargate
Will they be able to grow more crystals? I don't imagine they have more than 5 of each assuming the five al'kesh Zipacna had carried a full set of spares each. I hope there are Naquada expedients available. I don't thing Star Wars has an equivalent.