No matter how big or hi-def a TV you might have sitting in your lounge room, if you don't make the effort to go and see Alfonso Cuarón's Gravity in IMAX 3D then you are depriving yourself of one of the most spellbinding, exhilarating and intense cinematic experiences in years. Cuarón makes the soundless vacuum of space absolutely terrifying. Despite this, I want to go into orbit now more than ever. Sandra Bullock and George Clooney, not amongst my favourite actors, deliver nice performances that ground the film (so to speak) and prevent it from becoming just another special effects showcase. And so refreshing to see a film of this scale that - like the classic sci-fi films of the 1950s - only runs for a brisk 90 minutes.