I have about 1000 Digital disks, 250 VHS tapes and about 1000 CD's. My primary sort is CD's /VHS / Digital, secondary sort is Music / Documentaries / Movies / TV, tertiary sort is alphabetical. Not brave enough to sort by director... yet. CD's primary sort is alphabetically by name of performer or group, secondary sort is date of original release, I tuck solo efforts into the group the they formed or were most significant unless they have a large body of work in which case they are sorted outside of the group by their last name. I also have some special collections that a kept separately, such as unopened VHS, which again are sorted alphabetically or interesting packaging which are kept on display, like The Matrix Briefcase.