This request is a bit odd, probably.
Here is my world. We have about 500 jobs configured using Hudson. We have setup a number of "global views" to slice and dice the jobs into various buckets. Users tend to subscribe to RSS feeds for each Job View depending on what they are interested in. Currently, its a fairly tedious task to identify jobs that are not already classified into a "view" (any view other than the default All view).
If you have any other suggestions, I would appreciate it as well. If not, consider this a feature request.