Clever clogs support popular TV (8)
I believe the answer is:
brainbox
'clever clogs' is the definition.
(I've seen this before)
'support popular tv' is the wordplay.
'support' becomes 'bra' (a support for the breasts).
'popular' becomes 'in'.
'tv' becomes 'box'.
'bra'+'in'+'box'='BRAINBOX'
(Other definitions for brainbox that I've seen before include "Very clever person" , "Mastermind" , "cranium" , "Skull - clever clogs" , "quiz champion?" .)