The Odyssey
If you've never read The Odyssey, I'd recommend it. It's the story of an unfortunate Greek warrior who must make a perilous trek to return to his homeland after years of being stranded. I remember reading it my senior year in high school and having a great deal of apprehension for its exam. It was the first exam for our Humanities class and that friday before the exam I went home as usual dreading the studying I would have to do over the weekend.