Bulk Rename utility

[ravells]

This might come in handy if you want to rename a lot of saved WIP files and other mappy stuff (windows only)

Bulk Rename utility.

[Jaxilon]

Drat, I thought this was going to go through a map and replace city names or something automatically....LOL

[Midgardsormr]

Ooh! It can rename based on existing Metadata! I may have to give that one a try; the one I'm using right now doesn't do that, as far as I am aware.

If you're on a Mac, I have used R-Name: http://www.macupdate.com/app/mac/12259/r-name
I don't think it does that metadata thing, though, either.

[Carnifex]

Bridge can also rename files in bulk. Very nice and powerful utility - though I guess there are more powerful renaming programs (haven't checked out the ones above).
Bridge is installed with CS programs and if you installed a demo of any CS programs it's installed with it - and the Bridge "demo" doesn't expire...