'NCIS' Needs To Make This Guest Star a Series Regular

The cast of NCIS has changed over the years, especially since all the original main cast members have left the series. Timothy McGee (Sean Murray) and Dr. Jimmy Palmer (Brian Dietzen) are the last two stars from NCIS Season 1. Although they were initially recurring characters, their appearances were enough to earn them bigger roles, and eventually be part of the main cast. In Jimmy's case, he was a replacement Medical Examiner Assistant to Dr. Donald "Ducky" Mallard (David McCallum). Ducky's original assistant, Gerald Jackson (Pancho Demmings), was on leave after being shot by Ziva David's (Cote de Pablo) half-brother, Ari Hiswari (Rudolf Martin). When Ari returned to use Gerald as a hostage again after killing Caitlin Todd (Sasha Alexander), Jimmy officially became Ducky's permanent assistant.