Haha.
Well that's why I felt the need to clarify this. This could easily morph into "whom do you admire?", and that could be a long list.
(Warning: Pegheycentric dork talk coming)
Carolyn Bertozzi inspired my interest in 1,3-dipolar cycloaddition reactions, specifically of azides and acetylenic compounds in addition to the long moribund Staudinger ligation. I met her at the pinnacle of her genius, around 1998 or so, when she was only about 30 and had a blazing intellect and vision that I have never in my life (before or since) been in the presence of. Her groundbreaking work is an incredible crossover between biochemistry and synthetic organic chemistry. When I saw her work and heard her speak, I was convinced she would win a Nobel prize one day.
Unfortunately, she became so wrapped up in her personal life as a champion of lesbian rights that she neglected her magnificent scientific talents. She is still a great chemist, but I believe that, if you'll allow the analogy, the orange tree that is her mind peaked in potential from 1997 to 2005, and she chose to turn her attention away from it to water a different tree during this time. She is of course free to choose her pursuits as she sees fit; I just think she was a better scientist than activist. Nevertheless, she had a profound impact on no small number of chemists, including me. Much of the later half of my PhD thesis work was inspired by her ideas.