Ryan Kelley, who plays Ryan James, was 15 years old during the filming of this episode, which would make him the exact age that Clark Kent, Lana Lang, Chloe Sullivan, and Pete Ross are all supposed to be.
Like the front cover of Action Comics #1 in which Superman made his first appearance, the front cover of Warrior Angel #1 depicts the hero holding a car aloft with his hands. Both comics were originally published in June 1938.
The climax was shot on location in a bowling alley in Richmond, BC, Canada. Coincidentally, the bowling alley in question is named "Lois Lanes", also the name of Clark Kent's future love interest.
The song played at the end of this episode is "Superman" by Five for Fighting. It's about the inner lament and burdens of Superman from the character's perspective.