I'm sure that you all must have seen at least one of the many animated TV series that Disney made during the late 80s and 90s like "DuckTales", "Rescue Rangers", "Darkwing Duck", "TaleSpin" etc. I watched them a lot when I was young, and I danced to their theme songs as well! (you know you did it too! ). While I still enjoy occasionally watching the opening/title sequences on YouTube, I noticed something that I hadn't before. While "ThunderCats" and "He-Man" had unique animated opening sequences, these Disney cartoons' openings consisted of a montage of scenes taken from various episodes. What I found very interesting is that some of these scenes were from as far away as the 30th episode. This means that when the first episode was aired, they had already completed the animation of the 30th episode. This is quite a remarkable way of doing things and I guess that is why the animation quality in most of these Disney cartoons didn't deteriorate as much as it did in cartoons like "ThunderCats" because the Disney animators did not have to rush to complete the episodes.