Destination Void

Destination: Void is perhaps my favorite Frank Herbert novel. Mind-blowing dialog discusses the nature of consciousness while the action unfolds at a lively pace. The description of computer circuits seems at once arcane (reflecting the 1966 publish date) but strangely fresh and compelling. Somehow, Herbert's extrapolation from 1960's computing machinery makes the computers more entertaining and more tangible (there are lots of wires and flashing lights instead of chips, for instance). Additionally, Herbert's characters have their own realistic-sounding mathematical jargon that makes it fun to try to understand what they are saying. In this respect, it reminds me of the descriptions of the math of "psychohistory" in Asimov's Foundation.
The real strength of the book, though, is the constant narrative and ruminations on thoughts of artificial intelligence and consciousness (and fortunately Mr. Herbert only indulged himself with an expected but brief discussion of "consciousness-expanding" drugs in a subplot!)

A classic! Nothing more to be said! (I wish I'd liked the sequels as much!)