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Yesterday marked the 25th anniversary of Tron, a film that is so many things to so many people: a milestone of computer animation; a staple of any geek's library; an element in the film studies curriculum I developed; another Jeff Bridges box office bomb. My love affair with this film spans multiple media:

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I had to commemorate the anniversary of this cult hit with more than just a marathon session of lightcycling. After reading IGN's interview with Steven Lisberger, Tron's creator, I felt there must be better interview subjects out there.

So I instead got ahold of John Knoll, visual effects supervisor at Industrial Light and Magic. ILM was created by George Lucas for the original Star Wars films and has since gone on to become a powerhouse in visual effects. Mr. Knoll has worked on several of their best films, including Willow, The Abyss, Mission: Impossible, Star Trek: First Contact, the Star Wars prequel trilogy, and the Pirates of the Caribbean trilogy. And somehow, during all that, he found time to invent Photoshop.

On very short notice, Mr. Knoll generously donated a half-hour of his time to speak with me on the subject of Tron, computer graphics, and the industry's evolution over the last quarter of a century. The end result is a very satisfying transcript, even if some notable, general observations didn't make the final cut:

"Even today … filmmakers rely on the special effects to be the only appeal in the movie, and they don't try so hard on the movie because they figure the visuals will carry the film … For those of us who work in the industry, that's not something we encourage. It's just as hard to do the effects on a bad movie as it is the effects on a good movie, and we'd all rather have worked on a good movie."

Continue on to Computerworld.com to read the full interview.

A huge thanks to old LucasArts and ILM colleagues Tom Sarris and Ellen Pasternack, without whom this interview would not have been possible.

Update: the above article has been Slashdotted!