A woman in technology I admire greatly is Helen Greiner of iRobot. Helen is the co-founder of iRobot and holds a Bachelors degree in Mechanical Engineering and a Masters degree in Computer Science from MIT.
To me, she represents a unique and rare combination of technical skills and business savvy, and is a tremendous role model for women who aspire to be successful engineers and businesswomen. She gave a great speech at last year's Women of Vision awards where she won the 2008 award for innovation. The speech beautifully summarizes the challenges of becoming (and staying) a woman in engineering, and for that, I tip my hat to Helen.