I'm sure I saw it in this week's listings and assumed it was the film starring Kirk Douglas & Tony Curtis. It was the 1st film that I was allowed to go and see without my parents. Ah, Happy Days!!
1st June, according to DigiGuide. Though if it's the much-publicised full-frontal male nudity you're after, I can't remember seeing any in the first ep (plenty of lady flesh on display, though).