thedaoofdragonball.com

9Ypw7 TIL The manga creator of Dragon Ball Z, Akira Toriyama, met Jackie Chan, who is a fan of Toriyama's previous works, Dr. Slump. Because of the meetup, Toriyama had the inspiration to create Dragon Balls, then incorporated Jackie Chan's stunts as Dragon Ball fighting moves.
XGbP TIL that in Japan, May 9th is officially recognized as “Goku Day” to honor the protagonist of the Dragonball series.