A high percentage of the online reviews back up what zombie84 has just said. They knock the overall movie but agree on the importance of preservation. For instance:

early on the film succeeds in digging up some dirt on Lucas by criticizing his decision to essentially erase the existence of original prints of Star Wars while simultaneously pushing the importance of film preservation in Congress.

via: http://www.filmjunk.com/2010/05/03/hot-docs-the-people-vs-george-lucas-review/

But most spend only a fleeting sentence, deciding to focus on the reviewer bashing the randomness of the talking heads or the quality of a youtube video...

How does their 'secret project' differ from 'negative 1's secret project?