Ninety minutes of Sandra Bullock gasping for air doesn't sound like the most potent idea for a movie, but through the lens of Alfonso CuarĂ³n it becomes the closest a trip to the cinema has come to feeling like a day at Alton Towers. Gravity is the most roller-coastery movie ever made, using ground-breaking special effects and impressive (although if we're being honest still not essential) 3D to create the dizzying sensation of space. Gravity is so competently made that all it needs is to throw you into the action and have fun. For some reason, however, that's not the whole of it. Throughout the film there's various moments of forced imagery into a film that really should define a B-movie experience. The most obvious cases are when Bullock's Ryan Stone curls up in a ball after getting to the International Space Station, floating wires creating the image of a fetus, and the final scene, which sees her emerge from the water and stumble to the her feet akin to life coming out of the primordial ooze. But it's a running element becomes painfully on-the-nose on rewatch - there's countless references to world religion and other tidbits trying to point towards the universality of humanity. The point is nice, but it's not really relevant to the film.