I've blown it by flicking through the making of book and seeing pics of a fucked up Anakin, Vader minus his legs etc...
Also I've just listened to the soundtrack, and kinda got how the ending will be...Luke and Leia being held and shown by Mr & Mrs Organa on Alderaan then cut to Owen and Beru on Tatooine...Well going by the music I take it thats how it will end...Dunno!!
But I don't think it's too hard to tell how the story will go, I just hope there's a few surprises left for me to see
Nice seeing you again by the way D-J-D