My favorite author by far is Isaac Asimov. He's the grand master of science fiction and his writing style is just so easy flowing and his ideas are incredible.
Reading his books actually makes you smarter as he presents a lot of ideas for you to think about.
I join the club!! When I started reading the foundation, i finished the 5 books so quickly. Like you said it's really easy-reading, also very catchy, and yet very deep and interesting. I wish i'll take the time to read the robots someday.
I am glad you liked him... too few people even knows of him and yet he's the grand master of science fiction...
i must have read about 200 of his books and regret it now cause i can't find anymore of his books i haven't read.!!!
I have read the foundation 3 times, the robots 3 times over... the robots are actually really, really good as well. Ties in with the foundation stories.
You read 200 of his books, that is amazing. He wrote well over four hundred books. Here is a website containing a list of all of his books. Hope it helps in your search.