Japanese commercial (2011) by Google Japan to promote its Chrome web browser which emphasizes on speed and simplicity…
Hundreds of pictures are painted, scanned in sequence, opened on Chrome, and it turned into a mini-animation when the tabs are closed rapidly.
Not sure if other browsers could do similar stuff. There are other factors involved… the PC performance for example. In my case my browser would almost certainly crash, for whatever reason it is. Regardless, it’s a pretty cute commercial.