From NYCC:
Rinzler will be releasing eBook versions of his "Making Of..." trilogy of books next week. Each eBook will contain, in addition to the entire text of the hardcopy books, up to 30 minutes of video and up to 30 minutes of audio. The audios and videos will be extremely rare behind the scenes looks at the 3 films. Some of the audio is expected to be very interesting (1 example was a discussion on the set between Lucas and Sir Alec Guinness regarding the proper way to deliver the famous "May the force be with you." line).
2 of the videos that will be included with the eBooks were shown:
1 ) Speederbike chase test footage shot using modified Kenner 12" figures on hand-built Speederbikes (different design from final film) doing basically the whole sequence from the film (with some differences in dialogue and shots/events). All of the characters' voices were provided by Ben Burrit. The miniature forest used for the sequence contained scenery created for the miniature VFX shots for "E.T." which ILM was still working on at the time.
2 ) Rebel briefing scene where Lando announces to Han that that he's a general. Lots of improvised banter between Ford and Williams before they go through the actual dialogue from the script.
An additional video was shown from the filming of the scene where Luke surrenders himself to Vader on Endor. The video features the voice of Marquand both directing the actors and providing Vader's dialogue. This video was really funny, not only for hearing Marquand speaking Vader's lines in his own voice, but for Marquand's stage directions ("Annnnnd...ZING!" when Luke tries to reach Vader's "good side"). Sadly, this video will not be included in the eBook and was going back into the vault after the panel.
http://www.imperialshipyards.net/SMF/index.php?topic=8829.msg166124#msg166124
