As a filmmaker you should always be watching movies.
Some of the best filmmakers are cinephiles.
It's a good way to study. It'll make you more well rounded as a filmmaker. Figure out what you liked or hated about the movie you watched.
After I see a movie with my friends we always talk after wards. There's always the one person who just says: "I liked it. It was good."
What was good about it? Why did you like it?
How did the movie make you feel?