DVD Storage is an application that will make it easy for you to remember what DVD's, Blu-rays or Digital Movies you have.
The idea behind the tool is that if you are in a shop to buy your latest DVD, you can quickly check if you already own this disc. You can set special criteria to filter the database. There is also a 'quick search' that filters while you are typing.
There is an easy interface to add new items to the collection. 374 titles where entered in about 3 hours through the iPad interface to give you an example.
Sharing the database with other iPhone's or iPad's is easy and works through the iTunes Apps File sharing method. A detailed explanation is in the help menu provided.

Additional information for the more tech savvy ones.
The database used to save your DVD, Blu-ray movie/series collection is a SQLite 3 one. So the database can be used on any OS platform that supports this database standard.
For example an insert query can be written in a SQLite database manager to bulk insert data. As long as the database structure remains unchanged you can then import through iTunes your database back onto your device.

NOTE: This app does NOT play movies. It also does NOT save your movies in digital format. It only stores information about a DVD or Blu-ray that you type in.