I'm watching the Hotline Miami QL and I ended up buying the game, I love it.
Quick Looks from the past 12 months that aren't showing hilariously bad games or Kinect games, or anything that is silly and funny, but rather Quick Looks like the Hotline Miami one where the gameplay is awesome and watching the guys play it is also awesome.
funny QLs of bad games, but the ones showing me cool stuff I will end up buying.
Edit: I'm mostly asking for indie stuff, nothing triple-A. I have both Xbox 360 and a new PC but the priority is for PC games.