What Makes A Quote Memorable?

Hello. My name is Inigo Montoya.
You had me at hello.
Life is like a box of chocolates.
Luke, I am your father.

Every year, a handful of movie quotes become integrated into popular culture. What is it about them that makes them so memorable? Is it just that they bring up fond memories of the movie, or is there  something about their structure that make them more likely to be remembered and passed on? A recent study from computer scientists at Cornell sheds some light on this.