The picture of Lena Söderberg (left) is one of the most used test images for computer vision scientists. This Wikipedia article covers some trivia behind this picture.
I asked myself if the time has come to refresh this „running-gag“ by replacing Söderbergs image by the right one showing the german female singer Lena Meyer-Landruth, which won the European Song Contest in 2010. But I think nobody wants to struggle with all the copyright stuff. But I can’t deny the similarity between those two pictures.