Star Wars isn't really SF, I don't think. I question some of the rest, as well.

To me, "Science Fiction" generally gives a central place in the narrative to some specific or general technological advance, and then considers how human society might adapt to such a technological change.

Thus, Star Wars, which works equally well set in Feudal Japan, the Wild West, or the Golden Age of Buccaneers, is less science fiction than Doctor Strangelove, which depends heavily on specific technological considerations--everything from the protocols for authorizing the release of nuclear weapons on a strategic bomber, to the geopolitical implications of nuclear arsenals, to the ad absurdum logical conclusion of a doomsday weapon--for the strength of its narrative.