Jon's teeth.

Originally Posted by Mongoose

cant you people see this was an attempt to get you to say exactly what you just said, perhaps to find the backstagers amongst us

Originally Posted by Keba

Jon's smile is worth a million dollars, but it's not because of The Teeth. It's pretty obvious that The Teeth had to undergo a lot to look like that. Even if Jon's teeth weren't radiently white, he would still have a nice (and maybe more realistic) smile.