I registered some domains a couple of years ago that contained the word 'hobbit', and almost immediately got a letter from the lawyers of Tolkien Enterprises, demanding that I turn them over to them.

I hadn't even put a site up on the domains, and probably would have turned them over, but a lawyer friend of my said that I hadn't done anything wrong, and if I didn't plan to violate their copyright of the 'hobbit' that I didn't have too.

I decided to keep the domains (still haven't launched a site on them) on principle and wrote a nice legally worded letter courtesy of lawyer friend back to them. I told them I wouldn't be turning them over, and didn't hear back from them :)

I'm sure they are waiting for me to put up a site and violate the copyright somehow, but they can keep waiting.