Brad of films (4)
I believe the answer is:
pitt
'brad of films' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pitt that I've seen before include "Elder and Younger PMs" , "William --, who became Prime Minister at 24" , "Brad --, US actor" , "William - the Younger, twice PM" , "Youngest-ever British prime minister, d. 1806" .)