physics makes us all its bitches

Did anyone else notice this about Star Wars III? I'm just curious, because it was my favorite part (lifted from an AIM conver I was having):

Phoemeister: one nerdy film studies thing I like about the third one
Phoemeister: is the scene where palpatine is tempting him to turn to the dark side
Phoemeister: and they're sitting in a balcony watching some show, and it's dark except for the light coming from the show
Phoemeister: so when Anakin is facing the show and talking to palpatine, his face is lit up, but then every time Palpatine says something and he turns to look at him, he LITERALLY turns to the dark side
Phoemeister: because his face goes out of the light