I never heard about someone, who after watching this short by Nolan didn't have smile in his face. This movie is just masterpiece among the short movies (I watched plenties) and very inspiring according to fact that on the scene is just a man with a shoe and he's trying to catch something.
In this movie Nolan shows us that, he can really grab our attention. And play with our emotions like he does in many other movies, like a true genius and all he needs is just 3 minutes.
Interesting fact is that Nolan was also behind the camera which is very rare according to the Following which was the last movie he shot. And I personally like his camera.
Yet I would also mention that the soundtrack is made by David Julyan who made soundtracks for another Nolan movies Following, Memento, Insomnia and The Prestige.
So I would recommend Doodlebug to everyone who is Nolan fan, who likes Kafkaesque movies and basically to everyone who likes movies, cinematography and dynamic short movies.