Before Adam McKay worked on purely silly movies, he got to work with some incredible comedic actors like Chris Farley during his time writing for "Saturday Night Live." And in more recent years, he also worked with Matthew Perry, who passed away at 54 in October, on the film "Don't Look Up." (Though Perry's scene was ultimately cut.) Given those two experiences, McKay knows what it's like working with actors who've had struggles with addiction. The former "SNL" scribe recently recalled working with Farley on the iconic sketch series during the height of his addiction while also discussing his hopes for Perry in the apocalypse movie.

After Chris Farley was let go from his post at "SNL" in 1995, he returned to host two years later. At the time, his health was noticeably declining due to his drug addiction. According to The Hollywood Reporter, Adam McKay was the head writer of "SNL" during at that point, and he spoke about his experience seeing the "Tommy Boy" actor return to Studio 8H to host.