I'll read anything I can get my hands on. I read all the labels on the products I buy when I'm bored.
Seriously, though, I'd say I enjoy science fiction and steampunk the most, followed by historical dramas. I'm an avid reader of fantasy books, everything from high to urban (most recent read in this category is The Demon's Covenant, which I finished today - I'm not particularly satisfied, but the first part was good so I'll reserve my judgement until the third and final book is out). I enjoy realism as well, from time to time, although it does tend to depress me somewhat - I prefer to dream about what people could do, as opposed to what they actually do. I get enough of realism as it is.