Dramatist Ben is drunk (5)
I believe the answer is:
ibsen
'dramatist' is the definition.
(Ibsen is an example)
'ben is drunk' is the wordplay.
'drunk' is an anagram indicator.
'ben'+'is'='benis'
'benis' is an anagram of 'IBSEN'.
(Other definitions for ibsen that I've seen before include "Scandinavian playwright" , "Is Ben a playwright?" , "Henrik -, dramatist from fourteen down (Hedda Gabler)" , "Norwegian dramatist of 'Hedda Gabler'" , "Noted Norwegian playwright" .)