Organizing home videos and photos

Hello,
I am starting to organize my home videos and photos and need some help. My hard drive has been backed up on several external hard drives which have been backed up again. So there are several copies of the same videos and photos in many folders all over the hard drives (I know, bad idea!)
Is there a software that can scan all my drives and folders and tell me which are duplicates so I can start deleting them and burn the rest on DVDs?

Thanks