Tesler
The resume of Larry Tesler (Wikipedia articlepersonal site) reads like the history of interaction design.

He worked at Xerox PARC and Apple, created and managed the usability group at Amazon, and is now vice president of user experience and design at Yahoo!, managing the company’s interaction designers, visual designers and design researchers, and sharing responsibility for the company’s user experience, brand experience and product strategy.

While at Xerox PARC, he helped develop some of the language of interaction design including pop-up menus and cut-and-paste.

This interview by Dan Saffer starts with the question if there are any unbreakable laws for interaction designers, to which Tesler answers: “Just one. Design for the users.”

Read interview