What are your favorite, but less obvious, Visual Studio 2008 tips and tricks?
The nuance of the question is what are the features of the Visual Studio environment, that not everyone knows about, that you have come to depend on and that you would like others to know about.
The best tricks I find come across Sara Ford's blog - http://stackoverflow.com/questions/100420/hidden-features-of-visual-studio-2005-2008#100457
I'd recommend you check out the Webcast for session TL46 from PDC 2008: Microsoft Visual C# IDE: Tips and Tricks. The speaker points out some non-obvious things, and also talks about the free, recently released "express" version of CodeRush and some of the things that it can do.