Spoilers for 6.05 "Reunion" - Airing 10/26/06

[Vilandra]

08/18 - We'll learn that Oliver Queen (aka Green Arrow) and Lex went to boarding school together, and OQ was somewhat of a bully to him. And Lex, of course, isn't the kind of guy to forgive and forget. Source: Ask Ausiello @ TV Guide

08/18 - The "reunion" in question for this episode is a reunion between Lex Luthor and Oliver Queen, and the show has flashbacks to their days in boarding school. Source: KryptonSite

Source: SpoilerFix (http://spoilerfix.com/smallville.php)

[Vilandra]

09/11 - Lucas Grabeel will be playing Young Lex. Source: KryptonSite
08/26 - Flashbacks, taking place at Excelsior Academy, will show 15-year-old Lex and his best friend Duncan, a greasy-haired comic book lover. As they enjoy talks about comic books, both teens are tormented by a 16-year-old Oliver and two of his bully friends. After finding dish to possibly control Oliver, Lex wants to order him to act as if they are friends so he and Duncan get more respect or he'll tell the school's higher heads. Duncan would prefer going to the headmaster asap so that Oliver and his friends are expelled. A fight between the two friends ensues, which seems to lead to a tragedy. In the present, it's the 10-year reunion of Lex's class at Excelsior. Lex is accompanied by Lana and Oliver brings Lois. Oliver's two bully friends are there as well. Duncan is present but he is not the same he was before the tragedy, especially since he was treated with a fluorescent green liquid... The reunion will be tainted with blood and bruises. Source: SpoilerFix.com

Source: SpoilerFix (http://spoilerfix.com/smallville.php)

[Vilandra]

10/07 - As teenagers, Lex and Oliver (Justin Hartley) went to the same prep school, where Oliver and his friends bullied Lex and his friend Duncan (guest star Bryce Hodgson). Lex eventually turned on Duncan to gain their acceptance, prompting Duncan to throw himself off the roof. Lex and Oliver return to the school for a reunion and are startled when Oliver's old pals are killed in violent and mysterious accidents that point to Duncan. Meanwhile, Clark sees satellite photos that show four other craters were created the day he escaped from the Phantom Zone, causing him to believe that others may have followed him. Kristin Kreuk, Erica Durance, Allison Mack, John Glover and Annette O'Toole also star. Source: The CW

Source: Spoiler Fix (http://spoilerfix.com/smallville.php)