Pointing Out Visual Effects: Tron Legacy Creative Writing

In 2010's Tron Legacy, directed by Joseph Kosinski, many different kinds of visual effects (primarily CGI) are used to convey the slick, futuristic world of The Grid, a computer-world in which humanlike programs are forced to live under the rule of the evil Clu (Jeff Bridges). One sequence in particular that uses a variety of special effects is the scene when Sam (Garrett Hedlund) meets the computer simulacrum of his father, Clu, after being revealed as a User in the games. CGI, green-screen and facial motion-capture techniques are used to create the splashy, modern world of the computer, as well as the eerily-lifelike face of Clu.
Beginning at 36:12, the scene opens with Sam being brought into Clu's control room by his guards. At this point, the set is mostly practical, with all of the character's costumes consisting of black molded jumpsuits with red and blue LED lights and strips, to indicate their existence as computer programs. Cutting out to see a wider shot of the control room, we see a window that overlooks the Games - this window was likely a green-screen element, where the actors act against the blank space to be filled in with CGI later. The CG itself is used to depict the Games themselves, and the environment outside the existing set.
Once the scene moves in on a close-up of Clu (36:33), his face hidden by a helmet, CG is used to make the helmet retract in sections to reveal Clu's face - surprisingly, looking like a young Kevin Flynn around the time of the character's disappearance during Sam's childhood. This effect is achieved through extensive use of motion-capture cameras that were attached to actor Jeff Bridges' face to record every single nuance of his facial movements. These movements were then replicated in CGI, using a CG facial model of a younger Bridges' face (digitally imposed over an actor performing the physical work on set) to simulate someone who looks uncannily like young Flynn.
This particular visual effect, one of the highlights of the film, serves a narrative purpose as well. The filmmakers wished to create the illusion that young Jeff Bridges was actually present in the film; at the same time, the face is just uncanny enough to make it disturbing. The skin is somewhat rubbery, the lip movements are sometimes off, and the eyes look somewhat dead, at least in comparison to a flesh-and-blood actor. However, this effect is deliberate; by making him look strange and alien, and yet oddly familiar, Clu's deceptive nature is subtly hinted at. He is supposed to not look quite real, because he is not.
Other visual effects are used in this scene as well. When Clu takes Sam's disk and looks over the recorded data, CGI information is displayed above the disk as Clu holds it. The information mostly consists of flashes of previous shots of the film, as though to go through Sam's memories of his adventure thus far. The rest of the scene plays out mostly in this practical set; Sam and the CG facsimile of his father converse for the rest of the scene, and then Sam is taken away to the games once more. The scene closes (38:36) with a shot pulling out from the practical set to a CG rendering of the ship that they are on, as it flies out to the games area (also CGI).