I think Jim Sachs is one of the most creative and talented people I've ever seen. He is an amazing artist and a pioneer in computer graphics.
I used to teach Art History (as well as Computer Science) and I showed a colleague of mine some of Jim's work and she was stunned. His use of contrast in his images is amazing. They aren't just pretty pictures, there is real depth in them. Just incredible.
I have often wished he had been apart of the early Amiga days when they needed graphic artists desperately. Jim would have been a great counterpoint to Apple's Susan Kare. Think how much better those hideous icons of 1.0/1.1 could have been...not to mention the Kickstart/Workbench hand images.
He really showed people that computer graphics could be more than just game images.
Here are some links:
Interview:
https://www.youtube.com/watch?v=zvdNZpHZsO4Interview:
https://www.youtube.com/watch?v=SPu4tvYON68Gallery of his work:
http://amiga.lychesis.net/artist/JimSachs.html