As established in our list of the 7 sickest characters he ever played, Jack Nicholson is one of the all time greats when it comes to playing unhinged lunatics and nowhere is that made more abundantly clear than with his performance in The Shining.
Here’s some rare footage of him prepping for the infamous axe scene, in which he yells things like “AXE MURDER KILL” before the director even says “Action”. Terrifying: