The one major advantage that NCIS has going for it is that it’s currently airing. The military police procedural TV series is heading into its twenty-third season on CBS, and it’s somehow showing no signs of slowing down anytime soon. NCIS has also created a shared universe full of spinoffs, prequels, and more. Nevertheless, one other show still beats NCIS.
NCIS Is Great But It Followed A Blueprint CSI Had Already Laid
CSI Premiered In 2000

Although NCIS is a leading force in the forensic procedural genre, CSI: Crime Scene Investigation surpasses it. CSI debuted in 2000 and quickly became a cultural phenomenon. Since it premiered three years before NCIS, perhaps CSI had a slight edge, but regardless of when created, the earlier series will likely always be considered the greatest forensic procedural of all time.
CSI Was So Influential That The “CSI Effect” Is Named For It
CSI Was A Cultural Phenomenon
Yes, many would label NCIS as one of the most iconic forensic procedurals ever. It has run for 23 seasons and produced more than 1,000 episodes (across the NCIS franchise), after all. However, it never caused a phenomenon so influential and widespread that it was taught in schools like CSI: Crime Scene Investigation did with the CSI effect.
Aside from influencing public perception, the CSI effect can also be applied to how the creation of CSI popularized crime shows.
The CSI effect is an encompassing term for how the series shaped public perception regarding forensic science. Since it was a fictional show, most of the forensic science portrayed on the screen was exaggerated or false. Still, many applied what they learned from watching CSI to real life, causing jurors to have unrealistic expectations of having quick, concrete forensic evidence in court.