Hellsing Ultimate for an action packed, epic thriller. Nine or ten parts in Japanese dub, english sub. Each an hour though.
Angel Beats for a, at the start, action anime. Slowly develops into a more emotional one that the ending might make you shed a tear on. Somewhere around 20 episodes.
Soul Eater Anime: Different from the Manga. Action packed, fun, emotional but not too much. A Well rounded anime but it does get annoying towards the end where they significantly break away from canon and make basically their own rules up for the last twenty to thirty episodes. 56 or so episodes in all