Another note.. if you have a table that already has a bunch of movies entered with all their information. You wouldn't have to create a new table just to list the genres.
If you have a table something like this already..
(Example)
(title)Star Trek (genre) science fiction
(title)Star Trek II (genre) science fiction
(title)Star Trek III (genre) science fiction
(title)Star Trek IV (genre) science fiction
(title)Star Trek V(genre) science fiction
(title)Star Trek VI (genre) science fiction
(title)Rambo (genre) Action
(title)Rambo II (genre) Action
(title)Rambo III (genre) Action
(title)Rocky (genre) Action
(title)Rocky II (genre) Action
(title)Rocky III (genre) Action
(title)Rocky IV (genre) Action
(title)Halloween (genre) Horror
(title)Halloween II (genre) Horror
(title)Halloween III (genre) Horror
(title)Halloween IV (genre) Horror
(title)Halloween V (genre) Horror
.. you get the point, eh? You could create a query that will create a list or table that would just be "Science Fiction, Action, Horror" instead of having 6 Science Fiction, 7 Action, & 5 Horror. (I'm sure your list would have a ton more
) Food for thought. Good luck!