All those interested in ASP.NET might benefit from newest Microsoft toy. It is called WebMatrix and it is currently available as a beta. It brings to table everything lightweight web development needs: easy syntax (ASP.NET Razor), small database (well known SQL Server Compact Edition) and decent web server (IIS Developer Express). Those interested might as well check video presentation.
For me IIS Developer Express is probably best thing in this package. It is simple web server that does not need ninja to configure it properly. Works with any recent Windows system (yes, even XP is supported) and all that while having almost complete compatibility with full IIS Server. That is quite a feat since all IIS 7 modules are also supported alongside whole IIS 7 extensibility model.
All that and it needs only some space on hard drive and standard user privileges for both running and debugging.