If the anime was never completed, Then you're in luck. You can continue the story by reading the completed manga. This list has basically the same rules as a couple of my other ones, includes anime originally based on a manga, no...
A list of manga that has been adapted to/from a live action movie or drama. Key: follows Web Country Code.
Anime that have 30+ minute episodes 3+ episodes (3 movie series at the end that I feel belong on this list)