“With the 300th episode, we looked backward. It was a very nostalgic episode. It paid tribute…
“With the 300th episode, we looked backward. It was a very nostalgic episode. It paid tribute to the whole length of the series. With this episode, we made the decision to look forward, and to celebrate how far we’ve come, and how far we have yet to go,” executive producer Krista Vernoff said of the record-breaking episode.