The lead character was originally going to be in a novel written by show creator, Rob Thomas.
The theme song is "We Used to be Friends" by the The Dandy Warhols.
In the original project notes and the original pilot script for the show, there were some name changes. Lilly's name was Samantha, Lianne Mars's was Rebecca, then Abbie, Wallace's last name was Collier, Logan's last name was Hewitt and the Kanes' last name was Cain, then Caine.
The character of Meg was created specifically for Alona Tal. She auditioned for Veronica, and was Rob Thomas's second choice for the role. He liked her so much he made a recurring role for her.
UPN, the network that airs Veronica Mars, were concerned during early episodes that viewers would confuse Teddy Dunn and Jason Dohring, who play Duncan and Logan, respectively. A color code was created where Dunn wore blues, and Dohring wore earth tones (greens, browns, etc). The color code still stands today.
Jason Dohring initially auditioned for the role of Duncan while Teddy Dunn initially auditioned for the role of Logan.
The car that Veronica drives for seasons one and two is a convertible Chrysler LeBaron. In season three, she drives a silver Saturn VUE.
Concepts included in the original project notes for the show that were later dropped include Veronica being 13 when Lilly was murdered, Keith being fired because of evidence disappearing from the police station, with hints that Don Lamb was behind it, Strom Jenkins, a character who called in the Abel Koontz tip, and Veronica finding that Strom Jenkins, Don Lamb, and Jake Kane were part of a larger conspiracy to cover up Lilly's death.
Logan drives a yellow Nissan XTerra S for seasons one and two. He drives a black Range Rover for season three.
SPOILER: Originally, according to creator Rob Thomas, Veronica and Duncan were going to be related. After it got picked up by UPN, a network channel, and not by HBO, Showtime, or FX, they decided not to push it into "Twin Peaks territory".
After the second season, the show was picked up by The CW because UPN merged with The WB to form The CW.
In an attempt to keep the struggling show on the air after its third season, creator Rob Thomas filmed an extended pitch for the fourth season that advances the show's timeline considerably. Instead of being a college undergraduate, as she was at the end of season three, in the spec season four, Veronica has graduated from college and the FBI Academy and is starting her first day as a FBI agent. The pitch contained a whole new cast of heretofore unseen characters, and, except for Veronica herself, none of the characters from the show's previous seasons. The CW failed to pick up this new version of "Veronica Mars," and the show was canceled.
Amanda Noret, the actress who plays Madison Sinclair, has a real-life cousin named Shelly Pomroy, which is also the name of the character at whose party Veronica is drugged.
Both Sam Huntington (Luke) and Aaron Ashmore (Troy) went on to play the character "Jimmy Olsen" in different adaptations of the Superman comics. Huntington portrayed Olsen in the feature film Superman Returns while Ashmore took over the role of Olsen on the small screen in Smallville.
Rob Thomas, the creator of Veronica Mars, says on the season 3 DVD extras that Ryan Hansen's character Dick Casablancas was not originally meant to be a series regular. He was first cast for the second episode, as a nameless, rich Neptune resident with one line ("Logan!"). Thomas said that they read many young actors for the line, and when it came down to a choice between Hansen or another actor, they cast Hansen purely because he had "good hair."
The only characters that appear in all of the episodes of Veronica Mars are Veronica and Keith Mars.
The sticker of the black circle with the bananas in the middle on Veronica's locker is the album cover of The Dandy Warhols, the album the feature's the theme song 'We Used to Be Friends'.
On March 29, 2006 a fake press release entitled "Veronica Mars Canned" was released informing fans that the show had been canceled. After a few hours, creator Rob Thomas informed the fan base that he had been getting calls from the writers asking if they still had jobs, and the show had in fact not been canceled.
SPOILER: After the end of Season 2, TV critic Alan Sepinwall asked show creator Rob Thomas which elements revealed in the finale were planned ahead, and Thomas replied, "We knew that Beaver was the killer of Season 2 when we introduced him in Season 1. We knew his motivation, so playing him as the picked-upon, less-manly Casablancas boy was all by design." But Thomas also told Sepinwall that they did not plan for the eventual reveal that Cassidy had raped Veronica until the writing for Season 1 was all finished.
Actor James Jordan, plays two different characters in Veronica Mars. In season 2, he plays Thomas "Lucky" Dohanic and in Season 3 he plays Tim Foyle.
On March 13, 2013, cast members Kristen Bell, Jason Dohring, Enrico Colantoni, and Ryan Hansen, and showrunner Rob Thomas all appeared in a video posted to the crowd-sourcing website Kickstarter that challenged fans of the TV show (which had been canceled in 2007) to pledge $2 Million to fund (or help fund) a feature film project based on the show. The project broke a Kickstarter record when it made more than $1.3 million in about six hours; the entire amount was raised and surpassed in under eleven hours.
Rob Thomas was so impressed with Jason Dohring's acting that a scene of a tearful Logan confronting Veronica after Lilly's death was written and cut into the show after the actor was cast.
The scene during which Veronica wakes up after being raped was longer and more graphic, and was edited down by the censors.
Amanda Noret, who plays Madison Sinclair, and the girl who plays Shelly Pomroy (who is not a working actress but has appeared in over eleven episodes), are cousins in real life.
In the original pilot, Lilly's body was dumped into a river and found later. The network found this a little too disturbing, especially because it involved Jake Kane disposing of his own daughter's body and had her body be left on the Kane property.
The pilot script describes Veronica the following way: "She is not cute. She is sexy. Tough. Prematurely jaded. Angelina Jolie at 17."