National Lampoon's Vacation (1983)

Remember when there was this amazing comedy titled "National Lampoon's Vacation"? To this day, it is a true classic of the genre and certainly put a new spin on precisely what KINDS of insanity could occur when taking the fam on the road. Then, like with so many successful films, there was the sequel (which for me was even MORE of a classic than the original!). However, the third film emerged....and then a fourth. Suddenly, the luster was gone and disappointment set in.