Entertaining toys for anyone who might be contemplating a new child in the near future (and I know a few of you):
Baby Name Wizard’s Name Voyager is an amazingly entertaining Java app that lets you see how the popularity of various first names has changed over the decades. When I first found out about this site, I — and three other officemates — spent a good 20 minutes just playing with it, throwing different names out at each other.
And Behind the Name provides decent etymologies and information on those names.