Who was sitting immediately behind Luke Skywalker when Luke's landspeeder entered Mos Eisley?

C-3PO

And I don't know. The only idea I have right now is to simply keep up with the scores of everybody who participates and then list them at the beginning of every round. It's your game, so I suppose it ends when you say it does... and whoever has accumulated the most points wins! Wins what? Well, of course, the honor of having won! And it is only one response per round allowed, right? And I also assume that once a question has been accurately answered, it's off the table...

EDIT: Oops, I see you already did all that in your updated first post.