At the top of the page, you can scroll normally. But if you stop the scroll while one of the watches is over the text to the left, it'll auto adjust upwards or downwards - slick!
Even though it's not as smooth, jQuery panelSnap has been out for over 3 years and does exactly this.
It looks like it's more if you're between slides than if a watch is over text.
Ueno does this on their temp site as well. In my opinion, the first time I've seen scroll jacking done right (and the first manifestation that could have true staying power).
They accomplished the full-screen alignment goal while not taking the scrolling power away from the user. That subtle delayed correction animation is really nice.
Nice find, this kind of wiggle room makes locked slide scrolling feel a bit nicer to use