In my work I deal mostly with C# code nowadays, with a sprinkle of java from time to time. What I absolutely love about Eclipse (and I know people using it daily love it even more) is a sophisticated code formatter, able to mould code into any coding standard one might imagine. Is there such a tool for C#? Visual Studio code formatting (Crtl+K, Crtl+D) is subpar and StyleCop only checks the source without fixing it.
My dream tool would run from console (for easy inclusion in automated builds or pre-commit hooks and for execution on Linux + Mono), have text-file based configuration easy to store in a project repository and a graphical rule editor with preview - just like the Eclipse Code Formatter does.
Further to @Chris Karcher's answer - you can also automatically format the whole document by hitting Ctrl+K, Ctrl+D.
These formatting features work on a variety of file formats - it works wonders on ugly HTML.
I you want to do online have a: freecodeformat
For me, Ctrl+Shift+F maps to Find in Files. When I need to format code, I highlight it and hit Ctrl+K, Ctrl+F.
I understand this doesn't really address automated formatting, I just wanted to clarify for those who may not know this feature even exists in VS.
For Visual Studio, take a look at ReSharper. It's an awesome tool and a definite must-have. Versions after 4.0 have the code formatting and clean-up feature that you are looking for. There's also plugin integration with StyleCop, including formatting settings file. You'll probably want Agent Smith plugin as well, for spell-checking the identifiers and comments. ReSharper supports per-solution formatting setting files, which can be checked into version control system and shared by the whole team. Keyboard shortcut for code cleanup is Ctrl+E C.
In 'vanilla' Visual Studio, current file can be automatically formatted with Crtl+K Crtl+D, and Ctrl+K Ctrl+F formats the selected text.
As for a runs-everywhere command line tool to be used with commit hooks, try NArrange. It's free, can process whole directories at once and runs on Mono as well as on Microsoft.Net.
Some people also use Artistic Style command line tool, although it requires perl and works better with C/C++ code than with C#.
I understand this is a very late answer, but maybe you could be interested in this free Addin for Visual Studio 2010/2012
The .NET Foundation just released their code formatting tool on GitHub
https://github.com/dotnet/codeformatter
It uses the Rosyln compiler services to parse project documents and convert them to their expected formatting conventions. They're applying this to some of the very old CLR code in order to make all the projects consistent.