ND (Neutral Density) Filter:
A filter which reduces the amount of light coming through the camera lens, without affecting it's colour temperature.
Related Info: Colour Temperature
Noddies:
Shots of the presenter / interviewer nodding, smiling, frowning etc. These can be shot after the interview and inserted during post-production.
More info: Noddy shots
Non-Linear:
Any method of video editing which doesn't require all shots to be assembled in a linear fashion.
More info: Non-linear editing
NTSC:
National Television Standards Commission. Video/broadcast standard used in
the USA, Canada, Japan, Mexico, and other countries. Delivers 525 horizontal lines of resolution at 30 fps (frames per second).