Portal: No Escape

“Portal: No Escape” is a beautiful live-action short film based on the game Portal starring Danielle Rayne as Chell. It was directed by Dan Trachtenberg, with visual effects by Jon Chesson and matte painting by Maxx Burman.

"The illusion of freedom will continue as long as it's profitable to
continue the illusion. At the point where the illusion becomes too
expensive to maintain, they will just take down the scenery, they will
pull back the curtains, they will move the tables and chairs out of
the way and you will see the brick wall at the back of the theater."
-- Frank Zappa