What's the best program for removing duplicate files?
Try Avg TuneUp, may be it can help you.
Fast Duplicate File Finder is one of the most efficient applications for removing duplicate files. Go to http://fast-duplicate-file-finder.software.informer.com/ for more information.
There are many of them. For removing duplicate photos I am using Image Comparer. May be you will find it useful too.
With Duplicate File Finder you can organize your media files and increase free disk space needed to enlarge your collection.
"Duplicate Files Deleter" might come in handy from http://duplicatefilesdeleter.com/. Find and manage duplicate pictures. Very nice GUI and easy to use.