This is the first really good thing I've read on post-1979 Saudi Arabia:
URL: http://www.nytimes.com/2004/03/07/magazine/07SAUDIS.html
It's very long, but if you're interested in the subject it's worth it IMHO.
For everything that happened von Urschlim bis 1979, I highly recommend Robert Lacey's _The Saudis_.
Michael