The McPherson Tape (1989) Family birthday party has uninvited guests. First ever found footage film is slow, but gets by on naturalism and mounting creepiness. TIL: The first recorded mention of a birthday party is in the book of Genesis for the Egyptian pharaoh Joseph served.
One Sheet Words of Wisdom: The Fear Chamber (1968) "Of all the liars in the world, sometimes the worst are our own fears." - Rudyard Kipling