sentences:  Furthermore, the season 3 DVD set was originally rated 18 in the UK, Canada and Ireland, due to the content of the final episode, World Wide Recorder Concert (which contains references to child molestation).It was re-rated 15 in the UK upon its re-release in 2008, although in Ireland it is still rated 18, as a number of episodes in the latter seasons.Later in the series, season 20 was rated 18 due to strong sex references, along with season 22 was also rated 18 for child sexual abuse references.