You already saw Google Chrome's humorous about:internets Easter egg, but readernettleman points out that Chrome's got several special about: pages that reveal all sorts of interesting information about what's going on behind the scenes. Here's the full list, with screenshots.
- about:memory
- about:stats
- about:network
- about:internets
- about:histograms
- about:dns
- about:cache
- about:plugins
- about:version