According to the New York Times, “Rheingold Beer was once a top New York brew guzzled regularly by a loyal cadre of workingmen who would just as soon have eaten nails as drink another beer maker’s suds.”
[…] In the film The Godfather, a Rheingold delivery truck can be seen in the background while Sonny beats up his brother-in-law Carlo.
The curtain rises to show, at the bottom of the Rhine, the three Rhine maidens, Woglinde, Wellgunde, and Flosshilde, playing together… Alberich, a Nibelung dwarf, appears from a deep chasm and tries to woo them. Struck by Alberich’s ugliness, the Rhine maidens mock his advances and he grows angry. As the sun begins to rise, the maidens praise the golden glow atop a nearby rock; Alberich asks what it is. The Rhine maidens tell him about the Rhine gold, which their father has ordered them to guard: it can be made into a magic ring which will let its bearer rule the world, but only by someone who first renounces love. They think they have nothing to fear from the lustful dwarf, but Alberich, embittered by their mockery, curses love, seizes the gold and returns to his chasm, leaving them screaming in dismay.