From Nathan Yau. I love this stuff. It’s just wonderful, a great set of visualizations on a great topic.
Offhand, the only suggestions I have are to scale the graphs or indicate in some way the trends in the total popularity of each name (as it is, I wonder if some of the variation is arising from rarity), also to me the girl color looks a bit orangish and I’d go for something more purely pink.
P.S. These graphs are pretty good too.