Anime series, OVA's and movies I've seen that I felt were a huge disappointment, or just plain dumb. Stay away. Not necessarily the worst out there, but bad enough. Note, these are only the ones I've managed to finish...
This list includes only action, horror, thriller, sci fi and suspense animes. These animes have mild/ least amount of nudity scenes and sexual contents. Some of these animes do not have any sexual contents at all.
These are the animes with really good stories and lot of plot twists. You never know what's going to happen next.