Lord of the Rings (yes, I read the books AND watched the movies). One day I'll read the English original ...
Hitchhiker's Guide of course, all 5 books.
Lilian Jackson Braun, "The Cat Who ..." series

Kind of mystery, always some murder to discover and to investigate.
Shakespeare's Macbeth and others, not all read yet, but I have them all at home

in English, not easy to read, but fun
As for Hemmingway: I don't like his stories. We had them in school, and those were the worst English lessons I had. Macbeth was better
Hans Dominik, a Science Fiction author from almost a century ago. Quite interesting
Jack Vance, science fiction. The "Planet of Adventure" series (4 books). "Emphyrio". Some other books, too, I just don't remember the titles
Jean M. Auel. The "Ayla" series about people from about 10000 years ago.
And I read a lot of mangas

Problem is, I'm mostly restricted to those that get translated to German, since I can't read Japanese, and importing books from the USA is much too expensive
