Trivia: Jerry Siegel, the co-creator of the Clark Kent/Superman character worked on a school magazine when he was at Glenville High School, Cleveland. The magazine was called The Torch - the same name of Smallville High's school magazine, edited by Chloe Sullivan and with Clark Kent as an on/off contributor.
Trivia: In the Episode "Flash" when Clark confronts the Flash in his hotel room, he reads off the fake I.D.'s Jay Garrick, Barry Allen and Wally West. Those are the secret identities of the first three men to be called the Flash. Also, this Flash says his name is Bart, like Bart Allen, the teen hero formerly known as Impulse and currently being called "Kid Flash." (00:10:35)
Trivia: Martha makes a remark suggesting she thinks Bridgette Crosby and Dr Swan are together to which Bridgette comments "In another lifetime." Bridgette is played by Margot Kidder, who played the original Lois Lane, Prof Swan was played by the late Christopher Reeve. A nice touch I think.
Trivia: The Smallville Torch that Lex views on the internet has two articles that refer to past episodes. Pete wrote an article about his trip in a limo called Take Yourself Out Of The Driver's Seat ("Hourglass") and Chloe reprinted The Most Controversial Speech Ever Given In Smallville by Lana's mother ("X-Ray"). (00:17:45)
Trivia: In the episode where Clark is lured to the asylum when Lex is with some of his former enemies, Jonathan Taylor Thomas' character taunts Lex while holding a newspaper with a headline starting, "Themysciran princess" and some other words. That is a reference to Wonder Woman, who is from Themyscira.
Trivia: The asylum to which Lex is taken at the end of the episode is called "Belle Reve," which is French for "beautiful dream." It is also the name of the family mansion that once belonged to Blanche and Stella DuBois in "A Streetcar Named Desire." The mansion was lost, but it was the one memory to which Blanche clinged throughout her descent into madness. Belle Reve is also home to many lesser powered super villains in the DC universe, including some of Superman's enemies.