dvdtube is a Python script that will download all of a YouTube user's uploads and then optionally create a DVD from them. It's purely for educational purposes as a proof-of-concept.
lm (list movies) is a command-line script that lists movies in a directory, using metadata found on IMDb. You can list movies by rating (default), show the IMDb page in the default browser, or filter movies by genre, director, or artist.