The other day I got to thinking about this new Tron: Legacy movie and realized I hadn't seen the original in years. So, since the film is out of print on DVD and runs around $50 on eBay, I dusted off an old VHS copy and got cracking. What I found was a film that relies almost as heavily on Christian mythology as those Narnia movies. To refresh your memory, the plot revolves around three "users" who write computer programs for a large corporation call Encom. Jeff Bridges is a cocky 80's video…