Here's mine:
1. I had a dream where I saw a very, very early prototype version of the Original Star Wars. The message "A LUCASFILM LIMITED Production" was completely screwed up. Instead it said "A NGOIUWENP OWEJTNE Ebnsetubiw" or something like that. Then after "A Long time ago" blah blah blah, this is what happened: I saw a fireball orbit a planet, then zoom in on another planet, when a BLUE Star Wars logo flew on the screen. Then the original opening crawl appears, blue instead of yellow.
2. The part in ANH where Luke tells Obi-Wan he wants to become a Jedi. I had a weird dream where it was a bit different: When Ben says: You would have been killed too." Instead of "I wanna come with you", Luke says something that indicates that he's gone insane, then he goes off on a killing spree. Obi-Wan goes after him. But Luke only killed two things in his "killing spree": A horse and a Jawa (Like I said, it was a weird dream). Obi-Wan finally catches Luke in the middle of the desert, and they battle with lightsabers. Obi-Wan beats him (he doesn't hurt him, but he at least got him to come to his senses). Then Luke says "I wanna come with you" and the movie proceeds as usual.
3. I had a dream where I myself was walking with Luke, Han and Leia in Cloud City. Leia's hair is actually unbraided. We go into an elevator, and Leia is worried that something bad's about to happen, and Luke tries to calm her down. It was a very fuzzy dream, so I don't remember what happened after that.
4. I had a dream where I was in this basement digging through this stuff, and I find a copy of Star Wars on a very strange video format, something called CLD. I looked on the back and it said: "Because CLD cannot support 2.35:1 aspect ratio, as it was originally presented, Star Wars has been transferred in 1.77:1 aspect ratio, similar to the teaser for The Empire Strikes Back". Weird, isn't it?
5. I had a dream where I was watching the 1977 Bootleg, and I actually saw VISUAL changes! i.e. When the Tuskens mount their Banthas, the image is zoomed out and the sky is sunset. I woke up and wanted to go in the Preservation Forum and ask for a copy of this, but then I had to tell myself it was only a dream. After all, I've got the bootleg myself.
Now let's hear yours.