The first episode of season 7, "Truth or Consequences".
ravenous
In the first episode of the spinoff from JAG to NCIS "Ice Queen"
125,000
Season 5, Episode 3
Season 5 - Episode 7 - Requiem
ravenous
In the first episode of the spinoff from JAG to NCIS "Ice Queen"
125,000
Gibbs and Gearld
Season 5, Episode 3
Season 5 - Episode 7 - Requiem
Pedro Hernandez
None. Gibbs and DiNozzo are the two characters who have been present in every single episode of NCIS that has aired till date.
Gibbs does not become director of NCIS from what we know thus far. We are even told in the episode Hiatus That Gibbs couldn't be director do to his lack of patience. This is demonstrated in the episode Trojan Horse when Gibbs temporarily fills in for Jenny as acting director. He tends to skip over a lot of protocol and paper work.
'The Meat Puzzle' Episode 19 Season 2
Season 4: Episode 5 "Dead and Unburied" About 10 minutes in.
It is in season 3, the last two episdoes when Gibbs is unconcious.