Definitely open to suggestions, this is just a few of my favorites
  1. "Go ahead. Make my day."
    'Dirty Harry'
  2. "I've come here to chew bubble gum and kick ass. And I'm all out of bubble gum."
    'They Live'
  3. "Say hello to my little friend!"
  4. "I'll be back"
    'The Terminator'
  5. "Bond, James Bond"
    I honestly couldn't tell you which movie this originated in, but I like it so here it is.
  6. "Yippe ki yay motherfucker"
    *insert any Die Hard film name here
  7. "I will find you, and I will kill you"
  8. "You've got to ask yourself one question: 'Do I feel lucky?' Well, do ya, punk?"
    'Dirty Harry'
  9. "Hello. My Name is Inigo Montoya. You killed my father. Prepare to die."
    'The Princess Bride'
  10. "I like the way you die, boy"
    Jamie Fox, 'Django Unchained'
  11. "My name is Maximus Decimus Meridius. Father to a murdered son. Husband to a murdered wife. And I will have my vengeance. In this life or the next."
  12. "I'm the guy who does his job. You must be the other guy."
    Mark Wahlberg, 'The Departed'
    Suggested by @bjnovak