Mayo Chiki didn't really have an ending, just left everything hanging, like hoping for a 2nd season. Hate that. No sign if there will be another season or even an OAV. Princess Lover TV episodes ended OK, then the hentai OVA episodes kinda messed with the story line, I thought. I always rooted for the cute princess in the story. On their own, the OVA 1/2 was cool. Sekirei Pure Engagement at least strongly hinted at a 3rd season, though it hasn't happened yet. Love that show! Usagi Drop was more or less satisfying ending, the anime was so cute and sweet it made me cry a few times for the tiny little girl. Ending was OK. Those were the good ones, but there have been plenty of others I thought the endings really sucked. I gotta agree with Tsukasa112, though, mostly I am disappointed that the anime is ending - I want more!