Personal photos and HD videos (Netflix is good, but they tend not to feature films of my kids!). Also software ISOs, either for transfer/burning to DVD/CD or as

Personal photos and HD videos (Netflix is good, but they tend not to feature films of my kids!). Also software ISOs, either for transfer/burning to DVD/CD or as Linux "live" sticks for booting and running from. Individually these don't usually add up to the capacity we're talking about, but in aggregate they can start reaching that kind of figure fairly easily.