Embassytown by China Mieville. Humans on a strange planet in the far distant future have forged a sort of alliance with the indigenous population, called Ariekei. In order to communicate with the creatures, pairs of Ambassadors have to be matched and trained to speak the Ariekei's unusual language. As you may have guessed this is science fiction, but it is also a book which challenges the reader to look at speech, communication, and writing in new ways. Mieville has created a world that takes a few chapters to absorb, but once you're there, the story effectively carries you along, and you find yourself rooting for his compelling heroine Avice to save her planet from destruction. Want something different? This novel is definitely that.