Lame displays of light entertainment (4,5)
I believe the answer is:
game shows
'light entertainment' is the definition.
'lame displays' is the wordplay.
'lame' becomes 'game' ('game' can describe a permanently injured leg).
'displays' becomes 'shows' ('show' can be a synonym of 'display').
'game'+'shows'='GAME SHOWS'
'of' is the link.
I've seen this clue in The Guardian.
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