According to Rick Wakeman every frame of the PT is more dense than any frame of the OT.
I appear hidden in every shot of the nine numbered episodes and have a brief cameo in every spin-off including the Holiday Special.
When George was getting actresses to read for the numerous female roles in the first film he got Harrison Ford to chop wood wearing nothing more than a pair of laderhosen and a smile as a special test.
When George was getting actors to read the numerous male roles in the first film he got Harrison Ford to mime chopping wood wearing a unitard and a fake Dali moustache as a special test.
The Stormtroopers are not robots, they are plastic space sgellingtons. :-D