Math Happening... Tall and Short

I saw this picture today and thought that a math teacher* could have a lot of fun with it (maybe a bell work activity?)  Just pop it up on the projector and see what students can do with it.  Proportions, percentages, ratios and more... please share your thinking!

* science teachers could probably do something with it as well... or you could have your students see what information they could find out about the two people in this photo... a good test of their Google skills.