I have some that are worse because of my OCDs.
I just went through my entire music library with about 450 bands and if I did not have the full discography then I had to file each under a collection, downloaded a picture for the album are, and formatted each song so it is proper layout, etc. I just did this with all my movies on my external hard drive, and I am about to start working on my ebook library. Trying to decide how to split it up, if t will be by author, titles, fiction/nonfiction --->genre, etc.