These characters never made it to the recurring phase, however, they made notable impressions.

Character	Actor/Actress	Episode	Reason they're Notable
Sandy Watson	Abigail Breslin	2.01 - See No Evil	She's very cute and adorable. And also because there aren't many children on NCIS so each one is memorable.
Ernie Yost, retired Cpl. Medal of Honor recipient	Charles Durning	2.07 - Call of Silence	He was a great actor in that episode. I think the dancing scene made a lot of us cry.
The Orange Beanie	Toque L'Orange (Bottom Left Hand Corner Of Photo. In the white shirt.)	4.16 - Dead Man Walking	Ziva really liked him and it was so sad that he died. He was a great character and one most will remember!
Daniel T. Keating	Jonathan Magnum	6.01 - Last Man Standing