ABCs of Death, and ABCs of Death 2. They're anthology short films about death. There are 26 short films with titles in alphabetical order. Each film was made by a different director, so it's very hit and miss. Some short films are incredible. Others (like WTF) are just god awful.
In Until Dawn it teaches you to remain still when prompted so the motion sensor wont make your character move. It's harmless early game but late game it could mean one of your characters will die, it's one of the only flaws I found in it as it costed me one of my survivors with only 8 minuets till rescue...