Really Creepy

I just thought of something today - there are a bunch movies/TV shows/etc. based on secret US government organizations that don't actually exist. (Men in Black, Stargate, ect.) (yes, I am a science-fiction fan). The scary part is these stories have precedent - how long was the NSA operating before it was officially acknowledged to exist? The whole thing is just creepy - the government of the most powerful nation in the world employing hundreds or thousands of people on big, important projects, and no one knowing about it ... and that's about it for today - I think I'll take my tinfoil hat off now.