What about the man on the moon conspiracy? I don't know too much about it myself, but I remember hearing alot about this conspiracy when I was younger and I was pretty interested in it. Apparantly alot of people believe that America faked the first trip to the moon, and there are all these "clues" that lead them to believe this, such as the flag in the photos "rippling in the wind" when their is supposedly no wind on the moon. I don't know, its something like that lol.
I think there is an old movie about it too... trying to remember the title of the film.