Yes, in 2006 "Sussex Haunted Heritage: Historic Properties Open to the Public" was published, dealing with haunted properties in the county of Sussex, as the name implies. Sadly, it has just been remaindered this year. Time to start on another project--a writing one, not just more genealogy! :-) Ideally, I could combine the two!
Yes, it is fun. And have you noticed all the recent changes at Ancestry? Now it's much easier to see who else is working on the same people that you are, and you can see all the updates to anyone you're interested in. Really good stuff!