List a movie quote that's only one word long, that's instantly identifiable as being from a specific movie. It can't be a fragment of a sentence, and it can't be a proper name. So "Stella!" or "Rosebud" doesn't count, and neither does "Horrorshow." It can be performance-specific (see example one); it just has to be identifiable.
Some examples to get you started: 1. "Freeeeeeedoooooom!" - Braveheart 2. "Plastics." - The Graduate 3. "Groovy." - Army of Darkness 4. "Excellent!" or "Bogus!" - Bill and Ted's Excellent Adventure 5. "Whoa." - The Matrix 6. "Schawing!" - Wayne's World 7. "Smoking!" - The Mask 8. "Supercalifragalisticexpealidocious." - Mary Poppins 9. "Ni!" or "Ikkikkikkibetangwooboing!" - Monty Python and the Holy Grail 10. "Hooha!" - Scent of a Woman