Entertainer of television etc taken in by hoax (8)
I believe the answer is:
comedian
'entertainer' is the definition.
(comedian is a kind of entertainer)
'television etc taken in by hoax' is the wordplay.
'television etc' becomes 'media'.
'taken in by' indicates putting letters inside.
'hoax' becomes 'con'.
'media' put into 'con' is 'COMEDIAN'.
'of' acts as a link.
(Other definitions for comedian that I've seen before include "Demoniac sort of funny man" , "I'm not taken seriously" , "Joker" , "Cracker?" , "Humorist" .)