My favorite movie

I recommend you watch District 9 is my recommendence movie.

Recommendence is not a word. You can use "Recommended" as an adverb, but "District 9 is my recommended movie", while grammatically correct, is very strange..

It is kind of Science Fiction.

Science Fiction is a genre (kind of movie) so you usually don't need to specify "kind" or "genre". Ex: It's a comedy. It's a drama. It's Science Fiction. Note that there is no "a" before Science Fiction!

The movie's casts are unknown, I don't know the movie's cast, but the movie hits it came out in Japan two years ago .

Things like the origin of the universe or the existence of Martians is unknown, but the cast of a Hollywood movie usually isn't!
If the movie was very sucessful you could say "The movie was a hit in Japan when it came out, two years ago."

Another of my favorite movies is The Social Network.

It's one of several so "movie" is plural.

As I am studying computer programming, it is very exciting for me to watch the movie.

It's your personal opinion and we know it's a movie, so you don't need to use "the movie" again.

I also watch the movie in with English subtitles to study English.

There are several options:
I watched the movie IN English (英語版)
I watched the movie WITH subtitles　(字幕付き)
I watched the movie WITH English subtitles　(英語字幕付き)
I watched the movie IN English WITH English subtitles　(英語版英語字幕付き)

If you have movies or series to recommendence, please tell me about thatn them :)

What the Japanese usually call "drama" are called "Soap operas". They aren't so common outside Japan, Korea and Latin countries as far as I know!