the top 10 -rated shows of the week were : `` the cosby show '' nbc , `` a different world '' nbc , `` cheers '' nbc , `` the incredible hulk returns '' nbc , `` night court '' nbc , `` bob hope 's birthday '' nbc , `` golden girls '' nbc , `` 60 minutes '' cbs , `` unsolved mysteries '' nbc , '' and `` the american comedy awards '' abc .