There’s much to consider when you’re a publicist and a client planning for the push of a new movie.

If a celebrity needs to prove just how down-to-earth or relatable they are, they can consume obscenely fiery chicken wings on “Hot Ones” and nearly lose control of their bodily functions. If they’re looking to be taken more seriously, they can journey into the Criterion Closet and pontificate about the artistic wonders of some of the most acclaimed movies in celluloid history. The more obscure, the better.

Letterboxed’s viral “Four Favorites” gives participants a chance to demonstrate their relatability and cinematic knowledge simultaneously and in a fraction of the time, too. Any film fan who has been online in the last few months will have undoubtedly seen clips of Nicolas Cage, Adam Sander, Jennifer Lawrence, Keanu Reeves, Tom Hanks, Ryan Gosling, Emily Blunt — basically anyone with a...