There are Tron references in Marcel's writings for Linux Journal.
http://www.marcelgagne.com/
The first article, about the light cycle, is available in its entirety online:
http://www.linuxjournal.com/article/6638
The May, 2006, issue of Linux Journal has references to Tron in this article, "Use Linux to visit virtual consoles, cities and battle zones."
http://www.linuxjournal.com/article/8868
From the article:
"François, what are you looking for on Freshmeat? Quoi? A program to digitize you so you can go inside the computer? Yes, I know what it looks like in the movies, but virtual reality hasn't quite made it there yet. I thought you understood that when we discussed lightcycles months ago. No, François, I don't think people are going to be living inside computers anytime soon. I'm not laughing at you, mon ami. I am just amused, that's all. No, I'm sorry to disappoint you, but I don't think there are cities or people in your Linux system either. We will discuss this later. Our guests will be here any moment, and we must be ready for them."
and
"François and I were just discussing the possibility of virtual worlds inside our computers, a truly amazing prospect but one that is still fantasy. It's true that amazing things have happened in the time I've been working with computers. Your Linux system is one of those things, and its open nature means a freedom to explore that simply doesn't exist elsewhere. Still, I keep thinking that the computing model in general is still in its infancy. Maybe it's because I watched too much science fiction and as a result, my expectations are a bit high. Think back to the movie Tron, for instance. In the opening sequence, Flynn the hero of the show, sends a program named CLU into the system to locate some missing files. CLU, the program, looks like Flynn and moves around in a 3-D tank while a companion bit offers yes or no advice. There are towering skyscraper-like structures all around as he navigates his tank down digital streets. That's the virtual computer world I wanted to experience in my younger days."