It happens. Tarkovsky once remarked he'd felt Solaris would have been a better movie without the science fiction elements.
I remember reading that somewhere as well. I always thought it was a pity he felt that way since I think he made a really great movie but there you are.
It's the most faithful adaption I've seen, though of course there's stuff in the novel that wasn't in the film (mostly for time reasons). I actually had a mental checklist of stuff that'd never be in the movie - Frick daydreaming about a cop blowing his head off, and the thousand-eyed creature from beyond dimensions - but my god they actually put those in there. A Scanner Darkly is one of those rare moviegoing experiences where I basically geeked out the entire time, it's not often I see a PKD book quite literally put to film.
I really, really love that film. I think it's a little gem. And I can certainly see why it would have you geeking out like that

. Still, I definitely need to pick up the book pretty soon, no doubt.
Particularly in the case of Solaris. When I first heard Soderbergh was adapting it, I was really hoping for a movie that would finally show us the planet Solaris - big whompin' SFX extravaganza - but instead we got emo navel-gazing. No thanks.
Honestly, I'm a little shocked that anyone would refer to Soderbergh's "Solaris" as "emo navel-gazing". I'll admit I've never really been comfortable with the term "emo" in the first place but if I had to apply it to a movie I'd use it to describe the likes of the new "Star Trek" movie (which I enjoyed) but certainly not what is IMHO a character study and a study of human existence and reality in "Solaris".
What I like about Soderbergh's "Solaris" is that he chooses to focus on one of the core subjects in Lem's books. Although, based on what I've read, I'm not sure this is what Lem himself actually intended, I find the planet/entity Solaris to be the ideal means of examining human existence and relationships. It's ideal because it's so alien to us that we cannot truly relate to it. So, quite literally, we are thrown back upon ourselves, in a state where we cannot avoid the nature of our existence, our lives and how we interact with people existent and remembered.
This is also why I was never bothered by the fact that we didn't see more of the Solaris itself. And, after all, what would we expect to see other than what we already carry within us?
George Clooney and Soderbergh were going to take on Max Barry's Jennifer Government, which is a terrific book btw, but it's been in limbo for so many years now. I would consider it sci-fi because of the way it portrays the world if corporations were to rule it. In it, characters take the the name of the company they work for as their last name, hence Jennifer Government is a government agent. The game Nationstates is very loosely based on it.
Hmm, I'd never heard about this (the book or the idea of adapting it). I'd certainly love to see them adapt it. And I think I'll see if I can grab it at my local library. Thanks for the hint!