Great video showing off the microphone quality of the HTC ONE
I saw this not too long ago while searching for video samples, and I thought it was impressive.
The video quality is nothing revolutionary, but pay close attention to the sound quality of the guys voice behind the camera, and the girl, it's superb. Great for people who shoot video and want the audio to sound better than a tin can. I recommend decent speakers while listening to this, or decent headphones/earbuds.
If you are just listening on craptastic tablet/phone/budget laptop speakers you won't be able to tell how good this is as easily.