Disreputable dance action Americans like to watch (8)
I believe the answer is:
baseball
'action americans like to watch' is the definition.
'disreputable dance' is the wordplay.
'disreputable' becomes 'base'.
'dance' becomes 'ball' (ball is a kind of dance).
'base'+'ball'='BASEBALL'
(Other definitions for baseball that I've seen before include "Mainly North American game" , "some Americans enjoy it" , "American team game" , "Game played in sable alb?" , "American game like rounders" .)