If you've seen all three of the amazing films in Don Hertzfeldt's trilogy centered around the every-man protagonist 'Bill', then you realize just how different each film is from one another. Everything Will Be OK, while still terrifying and tragic, was bloody hilarious. I Am So Proud of You was still really funny, but focused more on the tragedy than the jokes. Then here's It's Such a Beautiful Day, a movie that I maybe laughed once in. It's quite the progression, but it serves to show us where Hertzfeldt wants to go next.
I Am So Proud of You will always be my favorite of these films. It's a perfect balance of black comedy and utter sadness. It's probably one of my favorite movies ever. It's Such a Beautiful Day scarcely seems like a continuation of that plot thread, though. While it still rends at the heart like any good tear-jerker, it's just separate from this trilogy in terms of style. And that's why I really like this movie; it cements itself as standalone from the already present chronology, but it still gives Bill a proper ending(?) with philosophy and physics worked into the musings of an average everyday stick figure.
Great film, with great visuals, with great writing, great character, and just a great concept.