The Sprint
Currently NCIS is the “second longest running scripted, non-animated U.S.” prime-time television series that is still on air. Which is number one? Law & Order: Special Victims Unit of course! SVU has been on air since 1999 and is still going strong.
List ‘Em
Going off the last fact, NCIS ranks pretty high as it is overall the 7th longest-running scripted U.S. primetime television series. The six ahead of it are The Simpsons, Gunsmoke, Law & Order, Law & Order: Special Victims Unit, Lassie, and Family Guy.