The all-American Clark family wins a deluxe European vacation tour. Ecstatic Mr. Clark (who seems to have O.D.'d on "Father Knows Best" reruns) plans a getaway jammed with forced family togetherness, two weeks sure to become a treasure trove of golden Griswald memories. For the Griswalds, it's typical holiday road havoc.

National Lampoon's vacation: When a typical American family takes a cross-country vacation, it can only mean one thing: total disaster. National Lampoon's European vacation: When a typical American family wins a deluxe European vacation tour, it is typical holiday road havoc.