The lines that people love most come not necessarily from the most revered films in the canon (though Casablanca and Citizen Kane are represented), but from down-to-earth comedies or action films (Ahem, "I'll be baaack!") that grabbed the audience on a visceral level. Whatever the genre of the film, these small bits of dialogue are important: they're cultural shorthand, part of the language everyone shares. Check out Premiere's list of the best killer insults, clever quips, and touching truisms in movies.