There are these two Frenchmen, Raymond and his son David Belle, who go around and claim that they invented Parkour running.
In reality, the sport had already been invented by Arnim Dahl in Germany in the 1930s. Here is some early Parkour footage:
This reduces the number of useful inventions made in France back to 4 (all cheese-related) and increases the number of useful inventions made in Germany to 18,277.
The Happy Hermit 
This video is great. Armin Dahl, known as “Klettermaxe”, was also the first so called “Stuntman” in Germany. (https://de.wikipedia.org/wiki/Arnim_Dahl)
About half of the 18,277 German inventions were in fact inspired my “Klettermaxe” and how to get over the Berlin Wall.
:-))