Alan Cooper is best known as the "Father of VisualBasic." Also the father of CooperInteractionDesign.
He is the author of "AboutFace".
For a web page worth the time, see http://www.cooper.com/alan/alan_cooper.html.
Published "TheInmatesAreRunningTheAsylum" in 1999, which explains why many people feel like smashing their computers.
Recent interview between KentBeck and AlanCooper discussing XP and InteractionDesign - see http://www.fawcette.com/interviews/beck_cooper/. Discussion at CooperVsBeck.
Actually, AlanCooper doesn't even see himself as a designer. He sees himself as an inventor and CooperInteractionDesign is just one more of his inventions. Cooper's work "in the field" was managing a group of designers, not doing design work.