Occasionally, a film will be so successful that it has a knock-on effect for other movies of the same type, and we’re seeing that at the moment with the jaw-dropping Christopher Nolan blockbuster The Odyssey. Currently selling out cinemas all over the world and on track to be by far the highest-grossing movie of the year (that is, until the Russo brothers deliver Avengers: Doomsday in December), Nolan’s swords-and-sandals epic has people rushing…