2. Striped Magic
https://www.youtube.com/watch?v=lvvcRdwNhGM By moving the top layer, you control what the viewer sees and you can animate a quick optical illusion. The Pac Man one is a favorite. 1. Nothing Is As It Seems
https://www.youtube.com/watch?v=UelJZG_bF98 And finally, this advert from Honda. Honda can usually be relied upon to make adverts that are interesting to watch and this one is no different. Using optical illusions to send out a message about perception around whether a car is fuel efficient, this might be an advert but it's not an advert you want to fast forward or skip.