In less than 40 years, CGI & 3D graphics have moved from a mere twinkle in the eye to become one of the most popular creative industries in the world. Each year we are seeing more and more 3D and Special effects enhanced movies appearing on our cinema screens. 3D generated illustration, movies and advertising has now become the dominant force in comparison to traditional art-working methods.
The history of CGI This is a great link to a page where you can watch clips of groundbreaking CGI movies such as Tron in chronological order. There is some handy info about the films as well.
A History of CGI in Movies Is another great source, written by Simon Vreeswijk. This page also includes some fantastic video clips and details.
In depth CGI timeline This is a fascinating page that looks at the evolution of CGI and details specific developments in technology that brought us to where we are today.