Why did Google get rid of the centered design of YouTube?

Google just changed YouTube. Everything is now aligned left. That might be good for a smaller resolution, but on mine it looks like this: http://i.imgur.com/cB2ZB.png

So now I have to look at the upper-left corner to see the video. Which is bizarre at least (and I'm irritated by it, for now at least).

Aren't Google testing these on multiple resolutions, or am I the only one that feels the discomfort of this lack of symmetry?