Wag seen with lag all over the papers and TV? (8)
I believe the answer is:
comedian
'wag' is the definition.
(I've seen this in another clue)
'lag all over the papers and tv?' is the wordplay.
'lag' becomes 'con' (both can mean a convict).
'all over' means one lot of letters goes inside another.
'the papers and tv?' becomes 'media'.
'con' placed around 'media' is 'COMEDIAN'.
'seen with' is the link.
(Other definitions for comedian that I've seen before include "Hope, perhaps" , "Stand-up" , "Joker" , "wit" , "performer" .)