The interactions between PARC and Apple were great to watch in the movie, but I figure it is a dramatized version of events. I'm wondering what was the origin of PARC and did Apple really get most of its design/technical ideas for the Macintosh from PARC? Would love to know more about this.
I recommend searching for a Robert X. Cringley interview with Steve Jobs. Excerpts from it were used in a TV series he made, but the full interview is on Youtube. It was posted on Reddit somewhere a few weeks ago.
It goes into this in some detail from the Apple perspective.
I don't know who is claiming Apple got most of its ideas from PARC, but that seems hyperbolic. The very important idea of a mouse driven GUI was developed at PARC, but Apple had a major role before that in the home computer and various other areas since.
The New Yorker has a good article about this: http://www.newyorker.com/reporting/2011/05/16/110516fa_fact_gladwell?currentPage=all
To summarize Jobs gave Xerox a deal on buying stock in exchange for them letting him visit and bring key team members along to view Xerox Parc's computers. The article goes on to note all of the improvements that Apple made to Xerox's original idea.