What do I like? Classics - from ancient Greek to modern - , postmodernism, social relevance, well written science fiction and perhaps, sometimes, a bit of fantasy. Intertextuality and a certain level of meta within the work itself (I'm looking at you, Milan Kundera; you made me addicted to it) is always a win. Novels, plays, short fiction - everything is fine as long as it is well written. Mythology and fairy tales are great, too.
I've once written a pretty long list of authors I like, which might give you a general impression of my pretty eclectic reading habits - well, at least a better one than any list of likes and dislikes would give:
Dante Alighieri, Rose Ausländer, Heinrich Böll, Wolfgang Borchert, Jorge Luis Borges, Ray Bradbury, Bertolt Brecht, Myra Cakan, Albert Camus, Michael Chabon, Anton Chekhov, J.M. Coetzee, Eoin Colfer, Arthur Conan Doyle, Samuel R. Delany, Pablo De Santis, Leon DeWinter, Philip K. Dick, Friedrich Dürrenmatt, Umberto Eco, Greg Egan, Theodor Fontane, Max Frisch, Neil Gaiman, Jaroslav Hašek, Federico García Lorca, William Gibson, Steven Harper, Christoph Hein, Michel Houellebecq, Elfriede Jelinek, James Joyce, Franz Kafka, Mascha Kaléko, Rudyard Kipling, Milan Kundera, Lautreamont, Ursula K. LeGuin, Stanislaw Lem, Heinrich Mann, Klaus Mann, John Milton, Michael Moorcock, Victor Pelevin, Marge Piercy, Dina Rubina, Salman Rushdie, Jose Saramago, Jean-Paul Sartre, Friedrich Schiller, Robert Silverberg, Sophocles, Lyudmila Ulitskaya, Franz Werfel, Kate Wilhelm, Christa Wolf, Roger Zelazny
Any idea whom else I should try reading because they would so wonderfully fit in this list?