I have up to now been using a macro to convert "This sort of text" to This_sort_of_text.
This is very useful for typing test class names.
(Details here: http://blogs.msdn.com/b/elee/archive/2010/02/28/my-bdd-naming-macro.aspx)
Unfortunately Visual Studio 11 (2012) does not support macros any more.
Can the same be done with resharper?
If not i might look into creating a VS Extension... unless anyone knows one exists.