I just finished reading "That Hideous Strength" (CS Lewis) this weekend where they have a disembodied head kept "alive", and some convicts in the pipeline whose heads/brains, it is implied, will be experimented on similarly. Lewis was remarkably prophetic.
Came here to say this. The Space Trilogy is one of the best series I've ever read. That Hideous Strength reminds me a LOT of what's happening these days. Even moreso than 1984. Would love to see a great director tackle it as a film.