Doug Tennapel is a very odd writer, even by my standards. He thrives on crossing boundaries in his stories. He gleefully merges genres, throws in themes you don't normally see in fantastic literature, and even his inks have a tendency to bleed through his panels.
Black Cherry is quite possibly his most ambitious work to date. It's a first contact/mafia/exorcism story that takes some surprisingly dark turns for the person who gave us Earthworm Jim and Tommysaurus Rex. It's also his best book yet.