The scene where Ziva first appears, she informs Tony she has been skiing in Vermont, and Tony comments on all the small Inns people stay at in Vermont. Guest star Bob Newhart played the owner of a ski inn located in Vermont in his series Newhart (1982).
First aired one month (almost to the day) after the Don't Ask, Don't Tell Repeal Act was signed. DADT officially ended six months (again almost to the day) after the air date.
Magnus is supposed to be Ducky's predecessor. However the actor who plays Magnus Bob Newhart is only four years older than David McCallum who plays Ducky.