History YMMV / CSI

** The pilot mentions Greg Sanders playing ''[=NFL2K=]'' on the UsefulNotes/SegaDreamcast. The Dreamcast was discontinued the next year in 2001, while the ''[=NFL2K=]'' series was discontinued a few years later in 2005.

* MisaimedMarketing: The kids' science sets, even though the age range is tweens and teens, probably counts. Also the Club CSI chapter books.

* TheyWastedAPerfectlyGoodPlot: Marg Helgenberger as Catherine returns for a guest appearance in Season 14. Unfortunately the producers chose to make the episode a flashback set during Season 1, meaning zero follow-ups about Catherine's new career at the FBI. And they didn't even bother to give her the short hair in her older appearances. Thankfully, she was brought back in present day for the GRandFinale "Immortality".

* TheyWastedAPerfectlyGoodPlot: Marg Helgenberger as Catherine returns for a guest appearance in season 14. Unfortunately the producers chose to make the episode a flashback, meaning zero follow-ups about Catherine's new career at the FBI. And they didn't even bother to give her the short hair in her older appearances.

* AcceptableTargets: Any relatively harmless modern subculture that seems scary or dangerous to the general public or the target audience.
** Gamers and gaming in "Hitting for the Cycle." For the love of all that is holy...
** Subverted in, of all places, the episode that dealt with ''actual'' circus freaks. The freaks are the most sympathetic characters in the episode, are not portrayed as pathetic or as people to be looked down on, and the killer [[spoiler:turns out to be by far the most "normal" out of all the suspects]].
** In at least three different instances, sex offenders were "outed" to their neighbors (and thus had their lives ruined by the [=CSIs=]) despite the fact that in all three cases, the people involved had a) served their jail time and were now leading clean, unoffensive lives; b) were only tangentally involved in the cases, if even that; and c) police investigators aren't supposed to give out information on suspects to the general public '''anyway''' regardless of what that information is, as doing so until a conviction occurs is a serious civil rights violation.

** ''Years'' before Creator/NathanKress turns up in Season 19's "Neverland", his ''Series/{{ICarly}}'' co-star Creator/JennetteMcCurdy turns up in Season 2's "Cats in the Cradle..." [[spoiler: she's the killer.]]

** In the Season 7 episode "Fannysmackin," caucasian Greg kills a teenage African-American gang member to stop him from beating a (also white) man to death, which sparks a subplot running through the next several episodes where the department is sued for wrongful death by the boy's family, and it's strongly implied that the family believes race to have been a motive in the killing. Greg is ultimately cleared, but fast forward to TheNewTens and police departments all over the country have been dogged by accusations of racially-motivated killings of minority suspects, with [[DirtyCop the departments covering for the perpetrators]], and suddenly he doesn't look so sympathetic.

* DiagnosedByTheAudience: Gil Grissom is all sorts of quirky and odd, a bit too literal, not exactly social, but not exactly unsocial either, kinda fumbling...how much so, it just depends on what the script calls for.

* AmbiguousDisorder: Gil Grissom is all sorts of quirky and odd, a bit too literal, not exactly social, but not exactly unsocial either, kinda fumbling...how much so, it just depends on what the script calls for.