This is the first, and only, episode ever directed by Michael Rosenbaum, who portrays Lex Luthor.
When Lana and Chloe are in the bowling alley and Lana picks up her second bowling ball, the writing on the ball shows as "LOIS LANES".
Chloe states that every meteor freak she has met has ended up dead or in Belle Reve. Unless something has happened we don't know about, she seems to have forgotten about characters such as Jordan Cross, Sarah Conroy and Kyle Tippet.
Clark uses all of his known super-powers in this episode, including super breath, not seen since "Sneeze".
Clark uses his heat and X-ray vision to destroy Chloe's GPS locater. In the Batman storyline "Hush", Superman uses a similar technique on Batman.