Philip K. Dick was pretty much the third classic SF guy after Clarke and Asimov in SF translated to Finnish, with Heinlein being almost unknown here. Dick's stuff is clever and consistently off-kilter in some way, and often somehow tied to the 60's counterculture. A big theme is identity and reality breaking down in some way. The Man in the High Castle, Ubik, A Scanner Darkly and VALIS are good. The short stories are also full of all sorts of weirdness.
I have never read very much Science Fiction, unlike some of the people here on Less Wrong, and I think I would like to. At least, the few books I have read I enjoyed. I've read a couple of books from Asimov's Foundation Series, two Michael Crichton books, Twenty Thousand Leagues Under the Sea by Jules Verne, and an anthology of SciFi short stories (no really famous authors) that my dad owned.
That list looks very short. I just finished reading a fiction book, and am looking to start another. Recommendations? What are the two or three books I simply must read?