I watched the movie a second time not too long ago and it really holds up to repeat viewings, something I hardly ever do. I asked GPT-4 to remind me of the last line, and it had some fun behind-the-scenes background: The last line of the movie “Don’t Look Up” is spoken by Leonardo DiCaprio’s character, Dr. Randall Mindy. He says to his family and friends gathered around the table, "We really did have everything, didn’t we?". Moments later, the comet that he had warned would destroy mankind does just that. Interestingly, this line was not originally in the screenplay. It was Leonardo DiCaprio who came up with it while they were shooting the dinner scene. Director Adam McKay said that DiCaprio walked up to him and the movie’s script supervisor, Cate Hardman, with the idea in between takes. McKay recalled that when DiCaprio said the line, he and Cate both immediately teared up and he knew they had to try it. However, McKay admits that though he shot DiCaprio saying the line, he didn’t put it in the movie until later in post-production. He said they were afraid of it in the edit room because it hit them so hard. But in the end, they decided to keep DiCaprio’s line in the movie and McKay is happy they did so. He said it was just the gut-punch of all gut punches.