DeepDream is AI software developed by Google to identify things it finds in images. Most people know it for the way it turns photos and videos into hallucinatory kaleidoscopic nightmares, in which faces of creatures inexplicably appear in clothing, rocks, clouds, or anything with a pattern or texture.
Alexander Reben made good use of DeepDream in an episode of Bob Ross's The Joy of Painting. My favorite part is where Bob is petting some little animal in his hand. It changes into a different kind of monstrosity with every frame.