I've started playing with the VS.NET 2005 Express Web Developer a lot, too. It's really nice (and really robust, considering it's free). I'm really digging ASP.NET because it's so powerful and so damned easy.
I'm working on a content management system in PHP and want to mirror it in ASP.NET in hopes to be able to sell it at some point.
I've just been really lazy about it lately.