VideoYou can pause video recordings. Most phones only let you stop recording, so you have to stitch together several files with software to get the same effect. The Vine and Instagram apps also let you pause video recording, but those clips have length limits. With the One, you're limited only by the phone's storage.
As for watching video, sound quality is wonderful, thanks to the phone's two front-facing speakers. If I hold the phone close enough to my eyes and slide the volume to maximum, I can pretend I'm watching in a movie theater. Phones with rear speakers sound boxy by comparison.