Not that I’m shopping or anything, but the Name Voyager at babynamewizard.com is pretty cool. It’s not perfect; if you have one very popular name and a far less popular variant it’s hard to get your mouse positioned to see the details of the less popular name. A zoom/pan control might solve that problem. Still, it’s a useful visualization tool.
Vectored from the incomparable memepool, which I don’t see much these days due to its lack of RSS feed.