As I mentioned in the shoutbox, I'm currently reading Edgar Allan Poe's tales in the original English they were written in.
Besides that, the last thing I read in its original language for free will was "The Lord of the Rings". And a piece of antique I'm currently reading for my Spanish class is "El Lazarillo de Tormes", kind of like the "Ren and Stimpy" of it's time, you look at life's negatives and neglected Spain of the XV-XVI Century with some humor and exagerations.