Chloe has apparently taken extra steps to protect her privacy after the last time Lana clicked on a folder called "CK", in the episode "Rosetta". Then it was filled with the pictures of Chloe and Clark dancing at the Spring Formal in "Tempest". It is unknown what the folder may now contain.
Clark's bedroom is shown for the fourth time. Past appearances include: Clark floating in his sleep in Metamorphosis, Alicia teleporting in and kissing him in Obsession, and when Lana and Clark woke up together and tried to sneak past Clark's parents in Hidden.
Lex and Lana's wedding invitation reads: The honor of your presence is requested at the marriage of Ms. Lana Lang and Mr. Alexander Luthor On Saturday, the twenty-fourth of February Two Thousand and Seven at Six O'clock in the evening Luthor Estate, Smallville, Kansas Formal reception to follow
This is the third time that Clear kryptonite appeared in the series in this episode, after "Visage" and "Hereafter".
Jimmy says Chloe thinks Clark can walk on air, a reference to his continued lack of flight.