You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: THE ELEMENTS 
Clue: Most fluorescent lights are filled with a combination of argon & this element, Kr
krypton

Category: CAMERA 
Clue: The names of TV cameras & videocassette recorders are combined in this device
a camcorder

Category: MOVIE NAMES 
Clue: Co-starring Tina Turner: "Mad ____ Beyond Thunderdome"

mad max