There are many absurd fictional AI-gone-haywire stories, but the real potential of general AI is unsettling.
Nick Bostrom’s fantastic TED lecture, which I (unconsciously, but unabashedly) summarized in this episode - https://www.youtube.com/watch?v=MnT1xgZgkpk
Singularity University, Nick Bostrom’s futurology institute - http://singularityu.org/
The Machine Intelligence Research Institute, another organization with the sole purpose of creating a “friendly AI” - https://intelligence.org/
The Future of Humanity Institute, which does research & raises awareness on existential risks that humanity is likely to face in the near future (including strong AI) - http://www.fhi.ox.ac.uk/
As TV Tropes notes, quite aptly, “A.I. Is a Crapshoot” - http://tvtropes.org/pmwiki/pmwiki.php/Main/AIIsACrapshoot