This page has a lot of great youtube videos of commercials throughout the history of computers.

 Triumph of the Nerds - http://www.pbs.org/nerds/

   PBS created this special that coincides with the book of the same name. This is truly worth watching if you are interested in computer history.

How it works - http://davidguy.brinkster.net/computer/

       This book was published in 1971, and the revised edition was published in 1979.

 PDP Planet - http://pdpplanet.com/

         PDP Planet is a portal into the Paul Allen collection of Digital Equipment Corporation mainframes and minicomputers, where pride of place is given to two PDP-10 systems (a 2065 running the Tops-10 operating system, and a 1090 scheduled to be brought up later this year).

 First game- http://www.bnl.gov/bnlweb/history/higinbotham.asp

            March 13, 1981 was the day the Brookhaven Bulletin published a story on employee William Higinbotham, speculating that he may have invented the first video game, with his tennis game of 1958.

Computer History Museum - http://www.computerhistory.org/

The Computer History Museum is the world's largest and most significant history museum for preserving and presenting the computing revolution and its impact on the human experience. Come and discover how computing became the amplifier for our minds and changed the way we work, live and play.

 Game revolution- http://www.pbs.org/kcts/videogamerevolution/ 

                This is the story of how a whimsical invention of the 1960s helped spawn the computer industry as we know it. Video games have influenced the way children live and play, forever altered the entertainment industry, and even affected the way wars are fought. See how it all began and find out what it means for the future. 

 GUI History - http://en.wikipedia.org/wiki/History_of_the_GUI 

The graphical user interface is a computer interface that uses graphic icons and controls in addition to text. The user of the computer utilizes a pointing device, like a mouse, to manipulate these icons and controls. This is considerably different from the command line interface in which the user types a series of text commands to the computer.