Zack Sharf Digital News Director “National Lampoon’s Vacation” star Anthony Michael Hall admitted at Fan Expo Chicago (via Entertainment Weekly) that he got caught trying to sneak onto the set of the 1983 comedy classic in order to see his co-star Beverly D’Angelo film a nude shower scene. Hall joined D’Angelo and fellow cast members Christie Brinkley, Randy Quaid and Dana Barron at the event. He stars in the comedy as Rusty Griswold, the son of Clark (Chevy Case) and Ellen (D’Angelo).