Lately...
She's a Javascript/ front-end developer (co-creator of Twistori + everytimezone for example), business thought leader type (did i just say "thought leader?" Sorry.), and co-founder of the SaaS service http://letsfreckle.com. But none of those things would get much as much attention as they do if it weren't for the fact that she is an amazing user experience/ interface maker. These skills make the things she works on (from books to slides to web form interactions) really friendly and fun.
(I have no professional affiliation with her. But full disclosure: We are Twitter friends. #realtalk)