The greatest TV moments of 2017 was, without a shadow of a doubt, this interview that turned into a complete shambles when the interviewee's kids invaded.
It spawned one of the greatest GIFs of all time.
And when it went viral across the world, he responded with this tweet when BBC News asked if they could repeat the clip on television.
Now, whenever he tweets an upcoming interview, everyone has one thing on their mind.
Oh, and your eyes can't help looking at this corner of the screen, just in case something is about to happen.
Today, Kelly was interviewed on BBC News about the famous incident, and was asked by Simon McCoy whether the door to the study now has a lock on it. Kelly responded: "It does."
He said: "This whole thing happened because I was tired, it was the day the South Korean president had been impeached, I had done five interviews beforehand and I just forgot to push the button, man."
He then said: "Even now, when I push the button, my kids come down the hallway and they pound on the door ... If you ever watch me doing a TV video and I'm talking very loud, it's because I'm covering up my kids pounding on the door, because my wife lost track of them again."