Scientists are old, boring guys who discovered stuff. Some were women. Most of them are dead now, men and women both.
If you had asked me in high school what I knew about scientists, that would pretty much have summed it up. Science simply wasn't made real to me, and scientists were just those black and white images that appeared occasionally in textbook margins.
If only my teacher had a resource like the PBS/Nova web-exclusive series The Secret Life of Scientists. If you want a good idea of what the site has to offer, check out mechanical engineer Nate Ball. This guy is truly a rock star of science, and just one of the many real-life, three-dimensional scientists featured there. (Be sure to click on the video of how Nate helped develop the Ascender, an amazing self-powered device which is now in use by armed forces and rescue personnel).
In my Teach with Picture Books blog I often praise biographies for their ability to provide real-life role models for children. This site does the same thing for the older, more tech-savvy generation. Definitely worth integrating into your existing science or career curriculum.