This episode has occasionally been stitched up with the pilot to form a feature-length episode. This has led to some people noticing a continuity error in the length of Tom Welling's hair as the actor had about five inches cut off in between the two episodes. Welling had to wear hair extensions for most of his close-ups.
Clark Kent tells Lana Lang that his father refers to Clark's area in the barn as his "Fortress of Solitude."
The WB placed a full season order after this episode aired over their initial ordering of 13 episodes.
Lex Luthor tells Clark Kent that the lead box which protects him from the kryptonite necklace is supposed to be made from the armor of St. George, the patron saint of boy scouts. Superman is sometimes referred to as the "big blue boy scout," and Clark is sometimes referenced, both in the comics and the show, to have been a boy scout. Also, Clark's first codename with the Justice League in the show is "Boy Scout".
The character of Lana Lang assumed the identity of Insect Queen after receiving insect-like powers from an alien in Superboy #124 (October 1965).