He is a man so important to science fiction that he has an award and magazine named after him. He is even credited with coining the term robot. He was a prolific writer in multiple dramas and was also a doctor of biochemistry.
I have not read all of Asimov's scifi. I have barely scratched the surface. I find the tales themselves are quite simple, but very enjoyable. A little known fact is that he died of AIDS after contracting HIV through a blood transfusion. I will end with a story that I heard about him during a screening of 2001. When the movie was finished Clarke asked Asimov what he thought, to which Asimov in anger stated that Hal didn't follow the three laws of robotics. I am not sure if it is true but it brings a smile to my face.
Hopefully they programmed the 3 laws into Watson.