Wikipedia has a page dedicated to controversial album art, which I found recently while looking up background on the 23rd birthday of Appetite for Destruction (yipe).
Eric Bana - Out of Bounds (1994) The cover art features Bana naked from behind while streaking at a crowded AFL game. He is reaching for the ball and his buttocks are covered with the message “contents may offend”. The scene was created digitally, with the overlap of two photos. An alternative cover for the album was later released.
I was really hoping Eric Bana had a musical release in his background because musical releases by actors are usually hilarious, but this one appears to be comedy. Sigh.