Exception Throwing Etiquette

Nothing irritates me more than investigating reported exceptions where the developer didn't take the time to record the context with the exception.  That is, you get an error message like "Field XXX value not valid" or something like that.  What value was provided that was invalid?  What are the valid values for that field?  What were the other arguments to the method being thrown so that it's quick and easy to construct a test case for fixing the bug?  
These are all...