When editing really long code blocks (which should definitely be refactored anyway, but that\'s beyond the scope of this question), I often long for the ability to collapse
This feature has been added to Visual Studio 2010's C# editor. I can't find the source verifying it was actually put in, but I remember seeing it on one of the Dev 10 team member blogs talking about changes since Beta 1 or something. As a consolation, here's one Microsoft comment suggesting they wanted to add it.