As far as sensation and perception goes, only one outstanding example of optical illusion stands out to me since the unit: the Tupac "hologram" at this year's Coachella festival, where Dr. Dre and a team of techies created an incredibly realistic and three-dimensional image of the deceased-for-fifteen-years Tupac Shakur. Though this isn't too similar to any of the illusions we discussed in lab, it is based off another illusion; the Pepper's Ghost illusion. Here's how it works:
You know how when you look out a window, and on the other side is a sunny day? You can see everything outside, and nothing is really reflected back to you (unless you really look for it). However, if it is dark on the other side of the window, chances are (especially if you are in a well-lit area) you will be able to see your reflection. Pepper's Ghost is an old illusion that plays off this idea. There is a hidden room with a person in it, and a thin sheet of glass between you and an empty room, angled so that if it were a mirror, you would be able to see the person in the hidden room. When there is only darkness in the hidden room, you just see the empty room in from of you. However if a light is shined on the person in the hidden room, voila, you perceive a "ghost" of that person in the actually empty room in front of you.
This is pretty much exactly how the Tupac hologram worked. Producers created a tupac performance using digitally remastered footage of Tupac concerts with additional 3d technology, and played it on a 2d screen out of sight from the audience. When the footage was played, it reflected off of a large angled piece of glass that was on the Coachella stage, providing the audience with a 3d rendering of Tupac!
I think this is an outstanding example of sensation versus perception, and what a classy way to re-introduce a classic illusion.