We have just received this baby at the office :
My first impressions:
Oculus Rift is amazing for 3D environment but quite disappointing with videos.
The immersion is total when you can move three-dimensionally in the environment, which is not possible with video. In this case, it's just a bit of 3d improved.
The gaming experience is impressive and I'm pretty sure it will be a huge hit on christmas, especially since that Oculus revealed they will release a VR ready computer for $499 only.