Un Natale esplosivo (National Lampoon's Christmas Vacation) is a 1989 American holiday comedy directed by Jeremiah S. Chechik and written by John Hughes, following Clark Griswold's (Chevy Chase) chaotic attempt to host a perfect family Christmas. The film, which has become a cult classic, follows a series of mishaps caused by eccentric relatives and extreme, failed holiday decorations. For a full summary and production details, see IMDb .