From The Man in Blue: 

I'm usually all about creating conflict. So, I thought it's high time that I add some love to the Internet.

On Late Night with Conan O'Brien he loves playing a game where they take two celebrities and "calculate" what their offspring would look like. Well, what if you could do the same with a Web page? You'd end up with a CSS Love Child.

Simply, this script tries to combine the content from one site with the design and content from another.

It doesn't work that well with all sites e.g. my blog on Zeldman or Google (WTF) (I think the preselected sites work best).  

If Mozilla purchased Google; PhpBB purchased WordPress; flickr take over del.icio.us, etc. 

Quite addictive. 

Via Simple Bits.