In a bonus feature in volume five it shows that one of Ed's boxers' possible designs was Automail. In a volume 7 bonus feature, guess what the Truth takes from him.
Kind of a weird example of both Fullmetal Alchemist and Cowboy Bebop with the latter's episode Sympathy for the Devil. The Bebop episode features a character, Wen who essentially looks identical to FMA's Selim Bradley. This is funny because of the common twist that both characters are far older than they look and are only masquerading as children. While probably accidental, it means that if you watched Bebop after FMA, you'd probably guess the twist immediately, and vice versa.
From the 2003 anime
Selim Bradley is introduced at the last second only to be killed off by the anime's version of Pride, King Bradley. Four years later, Selim Bradley turns out to be the manga's Pride. And King Bradley is his direct subordinate.
A similar case comes even later with Scar's death, where he continues to fight even after having his arms blows off. Come chapter 105 of that manga and not only does Bradley do the same thing, it was caused byScar.
There is a filler episode with Mustang's subordinates getting creeped out by unusual things happening in Warehouse 13, several years before SyFy had a show called Warehouse 13 about unusual things happening.
