A gaffer works exclusively with lightening set ups and delivering electricity to lights. A grip works more with the camera department (such as operating cranes and dollies)
A best boy is the first assistant (male or female) to either the key grip or the gaffer. That is, he or she helps get a set ready for filming by moving items into place or helping with the lighting setup. For a good explanation of grip, gaffer, and best boy, see Wikipedia's entry "Film crew" (link below is for "grip" etc.).
The gaffer gave the children candy when they came to visit him. The gaffer had to replace the spotlight when it stopped working.
Kiddies! or Young Buck, a gaffer is an old guy!
Harry Redknapp is the gaffer in North London
Jargon
The cast of C-Stand - 2011 includes: Kasim Aslam as Gaffer Greg Bronson as Key Grip Anthony Napodano as Production Assistant Jordan Pillar as Grip Greg Tidrow as Director Suzanne Ziad as Tent Girl
Sam Gamgee (and everyone else in Hobbiton, for that matter) refers to his father, Hamfast Gamgee, as "the Gaffer."
The duration of The Gaffer - TV series - is 1800.0 seconds.
The Gaffer - TV series - ended on 1983-07-05.
Ahmed Gaffer Hegazi was born on 1948-05-31.
Juan Gaffer has written: 'La noria de oro'