Ya, Valis sort of intimidates me... I haven't seen any of his movies, but A Scanner Darkly made it to my top 10!
I didn't like Amazon's Man in the High Castle. I hear Total Recall is quite different from the book (and with a short story, that's what happens, I guess). Love his short stories... I just finished King of the Elves.from his omnibus.
Edit, Flow My Tears...was really a trip. I'm still not sure what I read lol