Americans have always been paranoid about intruders, believing that there are Russians, Martians and Kenyans among us. Maybe the burden of an immigrant nation is that we’re never completely sure about our neighbors–or maybe it just gives us a handy scapegoat for what ails us internally, as individuals and collectively. Certainly the paranoia has only increased post-9/11, when it became clear that there really were malignant sleeper cells.

On a 1977 episode of In Search Of…, Leonard Nimoy looked at U.S. citizens who believed they’d sighted flying saucers. The host wonders if there really are UFOs. Of course there aren’t, you fucking idiot. Incredibly ridiculous and amusing. And some awesome incidental music.

• Part Two
• Part Three