The finale was an awesome episode. I've loved the theme of machine vs machine, and the heavy Scifi exploration of liberty in a tech world. Reminds me a lot of stuff Heinlein and some others were cautioning about in the 50s and 60s.
I was already playing it loud on the home theater, and when Pink Floyd started, I cranked it up. After the chills. Perfect.
“You want weapons? We’re in a library! Books! The best weapons in the world!” — The Doctor, S2E2