Mario Puzo's The Godfather
This movie is so great. I remember first watching it on a VHS copy from the late 80s or early 90s. It was most likely recorded from a terrible TV broadcast.
Like a lot of the movies I watched in my teens, I can surprised by how good it looks when I see them from a proper copy.
This movie is what I love about 70s movie. Grainy, slow, everything adds to the story. It is freaking great.