Hardly any name dropping's entertaining (5)
I believe the answer is:
scant
'hardly any' is the definition.
(scant means barely any or very little)
'name dropping's entertaining' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'dropping' becomes 'scat' (I've seen this before).
'entertaining' means one lot of letters goes inside another.
'n' placed into 'scat' is 'SCANT'.
(Other definitions for scant that I've seen before include "Minimal (amount)" , "Hardly any" , "Cursory" , "Scarcely sufficient" , "Bare" .)