Thanks for the post.
If i can remember i think Jedi was applied with digital techniques at the end of the films battle sequence.
I can remember a program on the tv when the film was at the cinema showing how they did it.
The point where many tie fighters are flying into the screen and the actor says"theres to many of them".
Also i think the action sequences where desighned on computer with the flight paths of the space craft being constructed in wire frame etc.