- Batman must have lined his utility belt with lead, which would explain why he was able to keep Kryptonite in it without Superman noticing. It makes sense since Batman was also one of the first people to figure out that Kryptonite emits a small amount of radiation that is also fatal to humans after prolonged exposure, so he probably did it (initially) to protect himself. This is further backed up in the episode, "Knight Time" when Superman had to masquerade as Batman, and Robin had to tell him which compartment in Batman's utility belt that the grappling gun was located. Superman, having x-ray vision, should have spotted it unless something as dense as lead was blocking it.
- The episode "World's Finest" has some disturbing implications about Lois's taste in men. "The Late Mr. Kent" makes it clear that Clark Kent is who he is, and that Superman is just what he can do. Similarly, the Batman Beyond episode "Shriek" makes it clear that Batman is his true self, not Bruce Wayne. To quote Bruce: "She likes Bruce Wayne, and she likes Superman. It's the other two guys she's not crazy about." Is she really that shallow?
- According to the creators, it's only Batman she really doesn't like, so make of that what you will.
- When you think of Jor-El's plan to save Krypton, it's downward chilling: Put everyone in the Phantom Zone, then once Jor-El travelled to Earth, he would release his people. Two words: Alien Invasion.