[DiapDealer]

Just wanted to mention a book I recently finished reading: Version Control by Dexter Palmer. It's a story about a physicist who spends years working--seemingly unsuccessfully--on a Causality Violation Device ("don't call it a time machine!").

It's not a time-travelling adventure or thriller or anything, but it's got great characters, a great premise, and plenty of wibbly-wobbly, timey-wimey, paradoxical food for thought before all is said and done.