When David Rossi (Joe Mantegna) joins the team, he makes a comment that their offices are better than "that bunker", out of which the BAU used to work. The comment isn't metaphorical. The actual BAU (in its many earlier incarnations and titles) used to operate out of a bunker former FBI Director J. Edgar Hoover had built below FBI headquarters in Quantico, Virginia.
The character of Special Agent Reid was a child prodigy, having graduated from high school at the age of twelve. Matthew Gray Gubler, describing what may form his character's genius, has said that Reid may have Asperger's syndrome, and perhaps even be mildly schizophrenic. Reid's mother was schizophrenic herself.
When Matthew Gray Gubler initially auditioned for the show, he was told that he was not right for the part. However, he was called back to audition again a few more times and was consistently told that he wasn't right for the part. After several more auditions, Gubler was eventually given the role.
Penelope Garcia was hired by the FBI as a technical analyst after she was arrested for illegally hacking into their computer database. She was given the choice of working for the Bureau or being sent to federal prison.
Dr. Spencer Reid holds doctorate degrees in Mathematics, Chemistry, and Engineering, as well as Bachelor's Degrees in Psychology and Sociology. He is currently studying for a Bachelor's degree in Philosophy as well.
In a 2012 interview in New York Magazine, Mandy Patinkin said that he greatly regrets ever having accepted his role on "Criminal Minds": "The biggest public mistake I ever made was that I chose to do Criminal Minds in the first place. I thought it was something very different. I never thought they were going to kill and rape all these women every night, every day, week after week, year after year. It was very destructive to my soul and my personality. After that, I didn't think I would get to work in television again. I'm not making a judgment on the taste (of people who watch crime procedurals). But I'm concerned about the effect it has. Audiences all over the world use this programming as their bedtime story. This isn't what you need to be dreaming about. A show like Homeland (on which Patinkin began appearing in in 2011) is the antidote. It asks why there's a need for violence in the first place."
One of the signature images of this show is the brief shot of a business jet flying the team to a crime scene. Often these shots are paired as book-ends at the beginning and end of an episode, with voice-over of a cast member reciting a famous quotation. The jets shown are always Gulfstream products, including models G-IV, G-V, and G-450. Occasionally the shots are reversed left-to-right (for example, episodes "A Thin Line" and "I Love You, Tommy Brown"). The tail numbers shown are often registered to Gulfstream Corporation, indicating that the shots are taken from Gulfstream publicity materials.
CBS aired an episode after Super Bowl XLI (2007) in the hopes of transforming the series from a relatively modest hit into a top ratings performer. The episode featured cameos by Super Bowl announcers Jim Nantz and Phil Simms.
Paget Brewster and Aisha Tyler guest starred in Friends (1994), as girlfriends of Joey, that went on to date one of the other men. Kathy (Paget) went on to date Chandler, while Charlie (Aisha) went on to date Ross.
Jennifer Love Hewitt's character, Kate Callahan left the show after one season. She was replaced on the team by Aisha Tyler's character, Dr. Tara Lewis. Hewitt and Tyler played best friends and co-workers on Ghost Whisperer (2005).
Agents Kate Callahan and Elle Greenaway are the only agents on the team to always be referred to by their first names. The other agents throughout the series: Jason Gideon, Aaron Hotchner, Emily Prentiss, Derek Morgan, Spencer Reid, Ashley Seaver, Jennifer Jareau, Penelope Garcia, Alex Blake, Tara Lewis, Luke Alvez, and Stephen Walker are almost always referred to by their last names. However, Agents Hotchner and Jareau are always called by their nicknames: Hotch and J.J., respectively.
The third Touchstone, later ABC Studios-produced show not to be aired on ABC. The other two ABC Studios-produced shows that have aired and/or still airing on CBS are: The Amazing Race (2001) and Ghost Whisperer (2005).
Jason Gideon and David Rossi were the two agents that formed the basis for he BAU. The characters as young men were featured in the story "Nelson's Sparrow". But the older characters were never featured together, and the actors that portray them (Mandy Patankin and Joe Mantegna) have never acted together.
The trivia items below may give away important plot points.
In the beginning of season five, Dr. Spencer Reid is shot in the leg. This injury was unplanned, but had to be written in, because of Matthew Gray Gubler's real-life severe knee injury, which left him unable to walk for over four months. After a third surgery, Gubler started using a cane, but was unable to walk normally for the next five months. As of December 2009, Gubler was once again able to walk unassisted.
In an episode when Reid (Matthew Gray Gubler) is looking into a case that could involve his father, he returns to his hotel room to find Rossi and Morgan watching a soap opera (The Young and the Restless). This is a reference to Shemar Moore (Morgan) who had a recurring role on the show.
Jason Gideon is the only main character to have died in the series. Although, Gideon didn't die while he was on the show, he died eight years after his departure. However, there have also been characters that have faked their deaths, or have coded, and then brought back to life.
During the beginning of filming season twelve, Thomas Gibson, who played SSA Aaron Hotchner, was fired after a confrontation between him and a producer for the show. This led to his suspension. After an internal investigation, and due to the fact that this was not his first altercation with a co-worker, he was terminated.
In the time between Lola Glaudini's departure from the show and Paget Brewster's arrival, footage is used in the opening credits that originally featured Glaudini. The footage, from season one, episode three, is digitally altered so that Glaudini does not appear.