From the very start, with its elegant montage of kitschy postcards set to Lindsey Buckingham’s “Holiday Road,” “National Lampoon’s Vacation” (1983) lets the moviegoer know they’re going to get a much stronger effort than what is normally given to a road movie. Written by John Hughes and directed by Harold Ramis, one family’s cross-country quest for a theme-park vacation is an epic comedy that still makes some “best” lists two generations hence. A formula plot played out by masters, suburban dad Chevy Chase leads a cast so deep, you probably won’t realize Jane Krakowski was in it until the credits.