My sister is a "Mormon", and when I say that I mean that she says she is but doesn't really practice anything in the Mormon religion. However, she has brought Mormon missionaries over to my apartment to "convert" me. Of course it didn't work, but they're a really nice group of people. Most Mormons are. I don't know whether to be frightened or contented, so I try to stay away from them all for the most part.
One of the Elders was telling me about these heavenly Golden Plates that Joseph Smith Jr. used to write/translate The Book of Mormon. I asked them where the Plates went once Smith was done using them, and apparently he gave them back to the Angels he got them from.
Most questions I asked them ended in some ridiculous supernatural answer, so I'm inclined to believe that the religion was a sham (ala Scientology) that got out of hand. Of course, that can be said about almost all religions.
Their tiered heaven system or whatever is pretty unique, however.