Signifier --> signified
but
Signifier ---> another signifier
In other words, signs relate to each other, not to reality. Baudrillard extends this to say that what we experience as the world is a web of signs, not reality but a simulacrum of reality.
The movie The Matrix turns Baudrillard's idea into a sci-fi parable.
This video re-enacts The Matrix with Muppets.
But instead of being actual Muppets (in the cloth-flesh, as it were) they are computer animations.
So this is an animation representing Muppets representing a film representing a theory representing a relationship between signs.
And if you know anything more postmodern than that, please let me know.