Holidays Vs Teen movies
He wrote probably the two most beloved Christmas movies ever in Home Alone (1990) and Chrsitmas Vacation (1989), and also wrote and directed the best Thanksgiving movie, to most people, in "Planes, Trains, and Automobiles" (1987).
However, he is most known for his work on his teen films of the '80s.
If you had to pick, which contribution of his had the greatest impact?