As reference was made to Jeffs book - Camera Raw can I just add that I am almost half way through it and am finding it both extremely interesting as well as informative. My only critisism is in the style of writing used - subjective I know but I am finding forever changing from the first to the third person rather distracting. Perhaps this is as a result of him picking up the thread so to speak, I don't know, and of course only Jeff can answer that one.
In general, everything in the book was changed from 'I' to 'We' because the book went from a first person singular to plural. Even though 2 editors and myself tried very hard to go through the material and make sure we caught all of them, a few 'I's' slipped through except where it was intentional.
For example, in re-using Bruce's original Camera Calibrate method, I decided to maintain the 'I' and introduced the section has having been originally written by Bruce and updated only to maintain version 4.0 accuracy. So, that remained 'I' on purpose...
As to answering the question of whether or not the video and the book are redundant, I don't think so. I was very conscience of the fact that the video NOT merely be a video version of the book. In both cases, I tried to make sure the medium was used to the best advantage so some of the stuff in the book was a better medium for some things while the video medium was better for other things. So, to that extent, the design was to be complementary rather than either/or.
It should also be noted that a portion of the proceeds from the video will go to Bruce's estate...so, in the grand scheme of things, I would suggest people buy both. And, hey, if you feel like it, buy two or more copies...
P.S. I actually had several people at the recent Photoshop World buy a second copy so they could have me sign their book on the spot. I thought that was great!