Mirage Men - Documentary about a disinformation campaign against a man who was analyzing signals from a local army base. They convinced the dude that the signals were from outer space and provided him with false classified documents to convince him. The guy goes crazy from all the manipulation played on him.

Probably not, but I've heard the idea that it could've been a call for help, so to speak, for the surrounding civilizations to come and help for whatever kind of problem they could have been having.

Remember the Chilbolton message .