Here is a nice and new (kinda) Christmas illusion…
The left face appears to look directly at you while the right one looks to your right, even though the two images are (almost) identical. This phenomenon was proposed by the English scientist William Hyde Wollaston in the early 1800s.
What do you think, does it work for you?
Update: I thought it was obvious that the eyes, clothes, arms, and background are identical, but that the face and hair are mirrored. Sorry for the inaccurate wording!