How to default YouTube to HD

If you are like me, especially if you view YouTube videos in full screen, you want the video to be at the video to be playing at the highest resolution possible which of course isn’t the default.  The Tekzilla crew has found a great Chrome extension (I assume you can probably find one for Firefox too) that will automatically default YouTube videos to the resolution of your choice.  To find out just what this awesome little extension does, check out the Tekzilla Daily video below and tell us in the comments what resolution you prefer to watch YouTube videos in.