FxCop is a good utility for finding code correctness issues as well as
ensuring code conforms to microsoft coding standards.
ReSharper already catches some things like unused imports, unused variables,
unused methods, etc.
It might be nice if ReSharper could catch some other things, like enforcing
some simple naming conventions (like all parameters and local variables and
class fields start with a lower case letter, and all methods, class names,
and properties start with an upper case letter). This should be an OPTION
of course, but I think it would be cool to see how many of the FxCop-style
checks one could put into Resharper to just see in the editor as one types,
rather than having to run an external tool.