Trivia: At the end of the episode, Superman believes that Lex Luthor died after giving the Anti-Life Equation to Darkseid, who also vanished along with Lex while the others believe that Lex is still alive, and they might see him again. According to Dwayne McDuffie, Lex Luthor and Darkseid became a permanent part of the source wall when they solved the Anti-Life Equation. The same fate that happens to anybody who solves it.
Chin Up! / Dog's Day Afternoon! - S1-E5
Trivia: The Crimson Chin is played by Jay Leno. That's why they say that he was a "struggling talk show host" when he got bitten by a radioactive celebrity.
II (The Samurai called Jack) - S1-E2
Trivia: Some of the dogs working at the mine look like ones from "2 Stupid Dogs".
Fiend is Like Friend Without the 'R' - S1-E4
Trivia: Nergal is the villain introduced in this episode. "Nergal" originally was the name of the Babylonian God of Fire and Guardian of the Underworld. In the Bible, he is one of the demons allied with Satan himself. In the series Nergal is associated with the underworld and fire.