Not every TV show has found the right title on the first try — with some getting renamed after they already premiered. CBS’ NCIS is currently the network’s longest-running TV franchise. It premiered in 2003 as a two-part backdoor pilot coming off JAG’s success. JAG aired on NBC from 1995 to 1996 before making the move to CBS and remaining on the network until 2005. From there, the show expanded to include spinoffs NCIS, NCIS: Los Angeles, NCIS: New Orleans, NCIS: Hawaiʻi, NCIS: Sydney, NCIS: Origins and NCIS: Tony & Ziva. NCIS, however, was originally named Navy NCIS a.k.a NAVAL Criminal I...

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