If you have 25 minutes, this video is definitely worth watching. A crew traveled around the world (Japan, Hong Kong, England, SoCal, New York, France, Spain,...) and interviewed Porsche owners about their experience. There's also a lot of rare footage of the factory, test track, and interviews with Porsche engineers. It's a bit 928 heavy, but there's plenty of footage of brand new 924s and 911s.
And if you still have not had enough, here is a photographic tour of the Porsche factory, circa 1977.