The Smallville High Student Newspaper that Clark and Chloe write for is named for Glenville High School's Student Newspaper "The Torch" which Superman creator Jerry Siegel wrote for when he was a student there.
In each episode Clark can be seen wearing any one of, or a combination of red, yellow and blue; the colours he will one day don as Superman.
Contains frequent in-joke references to the Superman mythos in various episodes.
Chloe and Whitney were created specifically for the show (they were never mentioned in the Superman comics). However, in 2003, DC Comics announced that Chloe would be introduced into the Superman comics.
Belle Reve is the name of the estate that Blanche and Stella DuBois come from in Tennessee Williams's "A Streetcar Named Desire". Throughout the play, Blanche gradually becomes insane. In Smallville, Belle Reve is the name of a mental hospital. In DC Comics, Belle Reve is the name of a federal prison for super-villains; it is located in Louisiana.
Jensen Ackles, who plays Jason Teague in Season 4, was the second choice to play Clark Kent. If Tom Welling had not accepted the part, the role would have gone to him
The name of one of the Kryptonian baddies from season 5 is named Nam-Ek, the same name of the race of aliens come to earth (the race of aliens that Piccolo hails from) in the anime Dragonball Z. Nam-Ek is also the name of one of the Phantom Zone criminals in the DC Comics Superman titles, first appearing in Superman #282 (December 1974).
After the fifth season, the show was picked up by The CW because The WB merged with UPN to form The CW.
Lana and Chloe's dorm room number is 222, a reference to Room 222.
Although he plays the lead character, Tom Welling has admitted in interviews that he is not a fan of the Superman comic books.
'Milo Ventimiglia (I)' originally auditioned for the role of Clark Kent. Although the role went to Tom Welling, the producers at The WB liked him so much they gave him the role of Jess on Gilmore Girls. Ventimiglia now plays a different comic book-style superhero on Heroes.
Margot Kidder's character, Bridgette Crosby, was meant to become the primary villain of Season 4. After Christopher Reeve's untimely death in 2004, the show's producers decided to incorporate the death of the legendary actor into the plot as his character Virgil Swann was killed off screen. Kidder was not happy with this decision, feeling the producers were capitalizing on the actor's passing. Thus, she backed out of her commitments. As a result, the character of Genevieve Teague, as played by Jane Seymour, was created to fill in as the central big bad for the remainder of the season. Ironically, Christopher Reeve played a romantic love interest opposite both Margot Kidder and Jane Seymour; Kidder in Superman and Seymour in Somewhere in Time.
Cast members Tom Welling, Justin Hartley, Sam Witwer and Callum Blue were all born in 1977.
After the 15th episode of Season 10 airs, Smallville will take the crown (and the Guinness World Record) for being the longest consecutively running Sci-Fi television serial of all time (10 years without a break). Stargate SG-1 holds that title with 213 episodes, which Smallville will supersede by 5 episodes by the end of Season 10 (it's final season). Doctor Who however holds the record for the longest running Sci-Fi show in the world, running from 1963 to 2010, with another series starting in 2011, totalling over 700 episodes.
The character of Tess Mercer, aka Lutessa Luthor (Cassidy Freeman), was created to fill the spot left by Michael Rosenbaum's Lex Luthor in Season 8. Tess is an amalgam of the most infamous of Lex Luthor's female counterparts from various sources; Miss Tessmacher (Valerie Perrine) in "Superman: The Movie", Mercy Graves (Lisa Edelstein) in "Superman: The Animated Series", and Contessa Del Portenza from the comic book series.
In almost all the episodes the title of the episode is said somewhere in the show.
Since the start of the "Superman" comic book, there has been an abundance of characters with the initials "L.L.," including Lex Luthor, Lana Lang, Lois Lane, Lori Lemaris, Lucy Lane, Linda Lee, etc. "Smallville" continued that naming tradition with several of the characters created for the show, including Lex's parents, Lionel and Lillian Luthor, his brother, Lucas Luthor, and Lana's parents, Laura and Lewis Lang.
Actors Tom Welling, Allison Mack, Michael Rosenbaum, John Schneider, and Justin Hartley are the only actors to ever appear on the show, who also directed episodes of it as well. Although they did not direct the same amount of course since Welling has directed seven episodes; Mack has directed two; and Rosenbaum, Schneider, and Hartley all directed one episode each during the show's 10 year run.
Tom Welling (Clark Kent) is the only actor to appear in all 217 episodes of the series.