Use the "Add to Collection" icon in the top right corner of any video thumbnail when you're logged in (desktop version of site only) or directly from a video page with the "Add to Collection" button under each video.
Man at 3:14, the background view is excellent. In fact, if you look closely at the right corner, you can see that Bigfoot actually enters the scene. It's only momentarily, but you can see it. In addition, i really like the music in this video. It makes it easy to sleep to.