Smart Blondes

The other day after school, the less short of the short people got in the car and reported that she had heard her first dumb blonde joke. She took great umbrage at it, despite being brunette, and decided that for the next time she heard such an offense, she would be prepared. She would have, ready to hand, a list of the world's smartest blondes. It was a question I thought would be great to kick around here.

First to my mind was Werner Heisenberg, the genius behind early quantum theory. So, who should make the list as the smartest blondes?