I too love the FCG! I have wanted to build one for years and finally got the courage last year. I got a lot of positive reactions, it was a hit!
However, there are so many things to be made that people will just go crazy over. I also had alot of interest in my axeworthy ghost. Much to my surprise, people really enjoyed my talking boris that simply recited Edgar Allan Poe, they would actually stand there and listen to the whole poem.(the adults that is..)