Artificially intelligent

A new query for you well-read folk.  What works of fiction short or long, new or old, about artificial intelligence (broadly construed) do you most admire, amused/alarmed you, gave reason to think, convinced?   AI could in this instance include machine-enhanced human imteligence; conscious (ar apparently conscious) non-human-shaped machines, androids, human-shaped robots.  The limit might be that whatever it is  be human-engineered, but even that is tentative.