Personally, I like The Eyes of the Sphinx
which you've already read.
My other 2 favorite books, even though they're a bit older, but they're still fantastic, are Signs of the Gods
and According to the Evidence
, both of which are definitive works.
The documentary you're looking for is in fact called Chariots of the Gods and we have the DVD in stock at Legendary Times Books.
Legendary Times Books also offers an exclusive Lecture with Erich von Daniken
It is indeed a bummer that since Chariots of the Gods, EvD has written over 26 books, but much less than half of these titles exist or were ever translated and printed in English.
Therefore, sometime in the future it is my idea to translate some of EvD's books that have not yet been made available in English and publish them under the Legendary Times Books Press imprint. Stay tuned for further developments!