I was thinking of moving our companies listing the the dmoz directory to a more appropriate category for our company. The current listing does describe one aspect of our company but over the years we have gone in a different direction.
I think it's a good idea. If you can get the change to happen at the DMOZ, then it will be reflected at Google the next time they import the data and help to better target your business with more relevance to what you actually do. I've had some success with this kind of request in the past - and even getting a new category created by an editor who saw the reality very clearly.