RaS is a free application that smartly auto renames your files and sorts them by dragging and dropping the files onto RaS. Depending on what file type is, it can use metadata embedded into the file, deletes any blacklisted words, general file name clean or uses webservices. This is all done with simplicity in mind.
Auto renames/cleans up any file you throw at it.
Sorts the following files in folders(optional):
-TV show videos
-Jpegs
-Music
Easy interface with drag and drop.
Runs on any OS that has Java installed.
Cons
No option to layout how a filename is going to be saved.
No option to turn off certain rename services.
Summary
As the creator of RaS, I'm going to be a little biased :) But I haven't seen such an application like this that easy renames and sorts your files without any input (if you find a something like RaS feel free to give me a message, so I can check it out).
This application has saved many hours of renaming and sorting files that I would have to do manually by hand.
It's smart that you can just drag and drop your whole TV show or music or movie collection on your computer and will clean it all, as best as it can.
As with all betas there can be some bugs, but it's always improving :)