Interestingly enough, I just read the Rolling Stone review of this movie and it almost matched word for word my view on it after seeing it. It was not complimentary.
I was just disappointed as I did want to see it. I'm going to read the books and see if I like them better. I usually do.
Seems like I've heard something about Stranger in a Strange Land being made into a movie a while ago. Great book by the way.