Morgans wrote:

Tron (1982)
http://imdb.com/title/tt0084827

OK, I'll bite. What is the connection of the light pillars to Tron?

Teleportation/communication links, ie. I/O Towers. They looked like
"light pillars"...

Gateways to the users:
http://www.tron-sector.com/gallery/show.aspx?id=599
http://www.tron-sector.com/gallery/show.aspx?id=382

MCP for example:
http://www.tron-sector.com/gallery/show.aspx?id=1192

A sequel is in the works and the game Tron 2.0:
http://www.tron-sector.com/gallery/show.aspx?id=2161
http://www.tron-sector.com/gallery/show.aspx?id=85