Famous host, Danny broadcast for ages (1,5,2,7)
I believe the answer is:
a month of sundays
'ages' is the definition.
(I've seen this before)
'famous host danny broadcast' is the wordplay.
'broadcast' is an anagram indicator.
'famous'+'host'+'danny'='famoushostdanny'
'famoushostdanny' is an anagram of 'A MONTH OF SUNDAYS'.
'for' acts as a link.
(Other definitions for a month of sundays that I've seen before include "lots of services?" , "for ages" , "a long time" , "A bit of a stretch" .)