Hans Rudolf Giger: 1940-2014

http://www.hrgiger.com
There are plenty of imitators, but no one has created such dark & mysterious artwork.
http://alienseries.wordpress.com/2014/05/13/thank-you-for-the-nightmares-hans-rudolf-giger-1940-2014

http://www.independent.co.uk/news/obituaries/hr-giger-artist-hailed-for-his-surrealistic-creatures-in-nightmare-landscapes-who-won-an-oscar-for-his-work-on-alien-9365030.html

http://www.washingtonpost.com/entertainment/hr-giger-artist-who-designed-the-creature-in-the-1979-film-alien-dies-at-74/2014/05/13/6818becc-dabb-11e3-8009-71de85b9c527_story.html