Visual Studio 2005 SP1

Good: Much more responsive IDE is the biggest plus. Also, according to Scott Guthrie, it contains over 2200 bug fixes.

Bad: I could not uninstall the old Web Application Project package, so I tried fiddling in the registry, which led to me reinstalling Windows. Okay, so it’s actually my fault, but I choose to blame Microsoft anyway.

I do wish I did a little more reading before installing it.