The cast of National Lampoon's Christmas Vacation wore placards with Chevy Chase's dialogue around their necks. Chase confirmed that he couldn't remember all of his lines in a pivotal meltdown ...

"We all wore these placards around our necks with the lines so that he could just act, instead of going, 'What do I say now?'" costar Beverly D'Angelo recalled.

"I don't know what to say, except it's Christmas and we're all in misery." Well, here's one way to beat that misery. Fans of the holiday classic film "National Lampoon’s Christmas Vacation" will have ...