ET of '80s TV (3)
I believe the answer is:
alf
'et of '80s tv' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for alf that I've seen before include "Garnett or Ramsey?" , "Mr Garnett" , "- Ramsey, England manager in nineteen sixty six" , "-- Garnett, bigoted TV?character" , "See man" .)