At Cochella, there was a hologram of Tupac on screen singing his hits with Snoop Dogg.
Holy shit. It was obviously CG but it was scary real.
Imagine a future where movie stars never die; they just get their voice sounds digitized and archived (so they can craft any word from those noises) and get 3D body models so they can star in any movie even after they're dead and gone. So Brad Pitt can retire and license his avatar (20s, 30s or 40s) to different movie projects.
Holy shit. They already make CG backgrounds anyway so this is the natural next step.
You can make Star Wars episodes 7-9 by creating actor avatars of Mark Hamill, Carrie Fisher and Harrison Ford.
So what does this have to do with UX? Simple. What if you could buy these avatars yourself and make your own movies. Fan-based movies. A show gets cancelled? Fans make their own episodes as text scripts can automatically be converted into 3D movies. Dynamic commercials with an avatar actor that changes depending on your demographic.
In the UX world, static video becomes dynamic video. Unity replaces Quicktime.
Obviously the tech to pull this off convincingly is still a ways off, but if Tupac can pull it off, anyone can.