Lucas on his role as a consultant:
http://www.comingsoon.net/news/movienews.php?id=97668
“[If the filmmakers ask],‘Who’s this guy?’ I can tell them,” he said. “I mean, they have a hundred encyclopedias and things, but I actually know a lot. I can say, ‘This is this and this is that.' Basically I’m not — I don’t really have much to do.”
Eloquently put.