1. Do they have a bathroom on the Falcon? - Somewhere....
2. Why did Irvin Kershner not seem to mind the actors pronouncing Han's first name (esp Carrie Fisher who said both versions)? - HE was busy counting the zeros on his paycheck
3. What were the conversations like when Han, Leia and Chewie dined with Darth Vader? - I'm sure it was nothing but small-talk
4. Why did George Lucas dub over so many of the British actors with American actors? I'm sure many of them could have used an American accent had they been asked. - Everybody knows that British accents sound more evil than American ones
5. Does Vader sleep with his mask and helmet on? If so, don't his breathing sounds keep him awake? - Yes, he wears the mask. He also uses earplugs so he can't hear his breathing
6. Did Luke and Leia sleep together before they found out they were related? (yuck) - God, I hope not (unless I was from the south, in which case, I sure hope so)