Hotei (a fat Chinese Santa Claus character), pointing at the moon. In ancient China, a fat belly was the sign of prosperity and good fortune. That was before diet soda and high-fructose corn syrup.
Dogen, ultimately, is just another finger pointing at the moon. Dogen presents an approach (actually, quite a few) to holding one's finger while pointing at the moon. Dogen wrote, in addition to Shobogenzo, Eihei Koroku, Shinji Shobogenzo (a.k.a Shobogenzo Sanbyakusoku or tMana Shobegenzo), and other works.
There are many superstitions regarding pointing at the moon.
Lest we all forget, it's not about the finger, the approach, the person who points, or the moon.