Valis, Ubik, and A Maze of Death. For some reason, though, I get Ubik and A Maze of Death confused when trying to recall them. Valis stands out to me as taking the reader in a complete circle, with expectations of an amazing revelation, then ending back where you began, a little unsure if you found anything or not. Brilliant! Becasue it's so like real life "religious experiences", or epiphanies, or even an LSD trip, where things appear so profound but in the end, your not sure if or what you saw.