I think I like to reread books in the summer. I've bought a few of my favorite novels again (I think the last batch ended up with a young English-speaking mother in Kyrgyzstan who couldn't possibly afford English paperbacks on her husband's $40/month after-rent salary) and I'm just reading those. Persuasion and House of Mirth and Return of the Native and such. Harry Potter will probably be next. Have to be ready for the last book.
I am reading and loving Guests of the Sheik on annegb's recommendation. It brings back memories, some happy and some that I'd rather forget. There are a lot of forgettable experiences when you're overseas. But there are lots of memorable ones too.