Surprising, except nude dancing (10)
I believe the answer is:
unexpected
'surprising' is the definition.
(I've seen this before)
'except nude dancing' is the wordplay.
'dancing' indicates an anagram.
'except'+'nude'='exceptnude'
'exceptnude' is an anagram of 'UNEXPECTED'.
(Other definitions for unexpected that I've seen before include "Not foreseen" , "Unforeseen" , "Surprising" .)