This is always a hard category to answer as there have been soo many movies I have seen, and soo many movies I have enjoyed. The beauty of it all is that my interests in films are quite varied and versatile. I don't believe that one should be partial to any particular genre of film, or any other artistic expression, for that matter; it is the quality and substance of a film or art form that makes it truly appreciable.
Movies are an expression of the director's vision. What we appreciate about a movie is a matter of what we envision and believe the movie represents for us, or in us, as a source of relation. Movies are made to attach meaning for the viewer so that the viewer comes away being affected; of being able to relate to the story told. The fortunate thing in all of us, is that our lives depict more than one genre of film. We create drama, fiction, fantasy, comedy, and reality in our everyday lives. These crepits are what make us who we are, with our own stories to tell. The fact that we can come away from a film with some sort of peace, dismay, or even a tear, means that we have been touched in some way; that perhaps our reality makes more sense to us now, or perhaps it leaves us asking more questions. Either way, a great film always appeals to our senses and our emotions.
My list of great films include the following:
Sci-fi/fantasy: Star Wars, The Princess Bride, and The Chronicles of Narnia
Romantic comedies: When Harry Met Sally, Love Actually, P.S. I love you, 10 Things I Hate About You, Bridget Jone's Diary, Pretty Woman
Action: Independence Day, Gran Torino, Top Gun, Scarface, the Godfather series, Gladiator, Pulp Fiction, Goodfellas, Crouching Tiger Hidden Dragon, Enter the Dragon, Matrix
Foreign: Il Postino, Slumdog Millionaire, and Life is Beautiful.
Drama: Precious, Taken, Titanic, Monster, A Beautiful Mind, City of God, A Few Good Men, Schindler's List, To Kill a Mockingbird, The Shawshank Redemption, Reality Bites
Animation: Aladdin, Finding Nemo, Shrek, Beauty and The Beast, Pocohontas, The Little Mermaid, and Up.
Hope you enjoyed the list. Please feel free to tell me about your favorite movies.