Superman: The Animated Series Easter Egg - Kyle, Meet Hal... Hal, Meet Kyle

In the episode that introduces Green Lantern (I forget the name,) there is a scene on an air base where the rogue GL Sinestro hurls the rookie GL Kyle Rayner through the hull of a jet. The name painted on the jet is "Hal Jordan," who, in the comic books, was Green Lantern from the beginning of the Silver Age until 1993, when Rayner replaced him.