Really. Everything about the web... The part that fascinates me most about the internet is that we're still in the infancy stages of really understanding how people will use the capabilities and efficiencies that the internet provides. The web has already built fortunes, changed and destroyed industries, and yet people collectively are still so unsure of how to use it. There are no long-established "rules," best practices change almost monthly, and "game changers" pop-up almost annually. What could be more exciting?
Here's a short list of recent public websites I've been a big part of. I also do a lot of behind-the-scenes applications that cannot be shown here.
When you love something, it shows. Check me out on other sites and see what I talk about. I also write some of the blog posts for DBD.