These module names have been on my white board for a couple of months. I'd use them if they existed, and if I had more time to think about them I might even create them myself, but they don't so I'm not. I'm not keeping them on the board either, so I'll just archive them here and forget about them.
Test::Fathom: A Test::* version of B::Fathom, where you set the score your code has to come in under (or between). Mostly for giggles.
Test::NewVersion: checks that the version of the distribution and modules you are about to upload are later than the ones you've already uploaded.
Business::ISSN: Go from ISSN to periodical name. There's not much to this module because there's really not much to do. The ISSN doesn't really mean anything other than a one-to-one mapping.