"You know nothing, Jon Snow" is a phrase that must make Darren Criss's teeth grind together whenever people say it to him. As an actor, he'd probably love to have a prominent role in the smash hit TV show 'Game of Thrones'. He isn't Jon Snow, though. Kit Harrington is. That means Criss routinely has to disappoint people in the street who think they've chanced across a photo opportunity with the true heir to the Iron Throne.
Criss is best known for his time in 'Glee', and it amuses us to think of Harrington in Glee playing his 'Game of Thrones' character. It would have put a different perspective on the show, for sure. We wonder if anybody ever stops Harrington in the street and asks him to launch into a musical number? We'd pay to see that.