NCIS

The hand tools that Mark Harmon uses on the set of NCIS are mostly his own. Those are the tools that he uses in his own personal workshop.

Producers have said that most of the personality and interests displayed by Abby come from Pauley Perrette just playing herself. She is graduated in Forensics before coming to 'NCIS'.

There is a picture of Donald P. Bellisario hanging on the "NCIS Most Wanted Wall".