If you've not seen the 2010 documentary, Industrial Light & Magic: Creating the Impossible, it's definitely worth your time. Packed into one short hour, the film does a good job showing the birth of the special effects giant and the achievements the company has made in the last 35+ years.
If you absolutely can't spare the time, at least check out the 52-minute mark. JJ Abrams speaks to the challenges of keeping up with Star Wars and a few tricks used in the making of his first Star Trek outing.
