Last episode of Uchuu Kyoudai that I'd watched, just last week, was 80. It's still good for me, still interesting, so I'm still watching. I love the characters, especially the brothers. The current arc concerns mostly Hibito, which I enjoyed very much. I love long-running shows as long as they keep up the pace, keep the story interesting and keep developing the characters. Which isn't easy to do. A lot of series do lose steam after a while. And then there are those that leave you wanting more even after they're done, such as ... Uchouten Kazoku and Psycho Pass.