fxguide.com

n1Ar TIL in their latest film ‘Kubo and the Two Strings’ stop motion animation studio LAIKA used 3d printing for the Kubo character giving him 11,007 unique mouth expressions and 4,429 brow expressions, allowing for over 48 million possible facial expressions.
RyK7 TIL that to make the Snickers Brady Bunch commercial, the stand-in actors had to have the exact same chin, mouth, and lip proportions as the original Bradys, and had to keep their heads as still as possible to make tracking the faces easier.
KAv4 TIL That the fight scene on top of a train in Skyfall was actually filmed on top of a real moving train, and Daniel Craig did not use a stunt double.