When “Scanners” debuted in 1981, it was quite the talk of the schoolyard. “My big brother’s girlfriend’s cousin went to a midnight showing! A guy’s head really blows up! This girl at the theater ran out screaming!” Lord knows my mom would never let me see a weirdo Canadian horror film like that. When I finally viewed it decades later, I wish I’d seen it when I was 15. Corporate-weaponized mind readers (who somehow never know when someone’s sneaking up on them) trying to blow each other’s brains out (so to speak) required a little too much suspension of disbelief.