Yes I've made catalogues of my VCR tape collection, my own original music recordings, and my life history. I'd like a catalogue of my vinyl / cassette / CD collection too, and one of my DVDs and digital movies. I feel it's the only way to keep track of the things of the same type I accumulate, once the numbers get large. So it's a very practical thing, though I do rather like the process of repetitively typing in the data. Main problem is that none of my catalogues are complete - I'm aware of the downside of spending the rest of my life making them complete when there are other things I want / need to do, and even when I get a catalogue complete, as time goes by more items arrive that should be added to the system. I'd be a great librarian, as long the library didn't lend the books out, lose them, or acquire new ones. Collections just don't stay still.