Phillip K. Dick
If you don’t know Philip K. Dick through his novels, you most suredly know him through his novels that were optioned and made into movies. For example, Blade Runner, Total Recall, Minority Report, A Scanner Darkly, The Adjustment Bureau are just some of the films released based on his novels or short stories. Most recently, The Man in the High Castle was adapted as a series for Amazon.
Dick also had a very interesting life with many unusual and bizarre experiences. Rather than go into them here, if you’re interested follow the link to the wikipedia page and check out this section; Paranormal experiences and mental health issues.