I'm not going to talk about the plot because it's going to sound off-puttingly like that of The Fault in Our Stars. Yes, it's about a girl dying of cancer, but the beauty lies in the visual storytelling. The film features claymation, 90 degree camera rotation, and a whole bunch of fake mini movies within the movie (e.g. Jurassic Skate Park, Rosemary Baby Carrots, A Sockwork Orange) to illuminate Greg's quirks. Here is one of those cheesy YouTube film analyses about the cinematography:
I found it funny and sad, beautiful both in visual and aural composition. It is rooted in classic filmmaking (i.e. fully aware of and in homage to "the greats") but marked by unconventional--or at least rarely utilized, especially in teen coming-of-age films--techniques. I recommend it to all, after this hell week of Thesis is done.