Part of Jacques Tati comedy is not moving (6)
I believe the answer is:
static
'is not moving' is the definition.
(I've seen this before)
'part of jacques tati comedy' is the wordplay.
'part of' indicates a hidden word.
'STATIC' can be found hidden inside 'jacques tati comedy'.
(Other definitions for static that I've seen before include "Crakling or hissing noise caused by electrical interference" , "Motionless like certain electricity" , "Constant interference" , "Atmospheric disturbance" , "Not moving, like some electricity" .)