Yep Ex Machina was ace. Two thirds of the way through I thought it was trying to be cleverer than it was, but that was just a very clever smoke-screen for the final act.
Was at Sister-in-law's at Christmas and they put Gravity on. They have an HD TV, but only a DVD player, so it already looked crap being in standard definition. Then I started questioning the science, which I checked online to confirm I was correct. Sandra & George's astronaut characters are held together by a rope, she grabs part of space station, and she has to let him drift away in order that both of them don't die. Well there's supposed to be no gravity in space, so he would have just needed a small tug from Sandra to pull him toward the station, instead, he drifts off. Scientifically inaccurate.