Certification
- Argentina:13
- Australia:MA15+ (some episodes)
- Australia:M (some episodes)
- Canada:14A (Manitoba/Nova Scotia, DVD rating)
- Canada:G (Quebec)
- France:Tous publics
- Germany:12
- Hungary:16
- Hungary:12 (syndication airings)
- Ireland:15
- Ireland:12 (some episodes)
- Italy:T
- Netherlands:12
- New Zealand:M
- Singapore:M18
- United Kingdom:15
- United Kingdom:12 (season 2)
- United Kingdom:PG (some episodes)
- United States:Not Rated (DVD rating)
- United States:TV-14 (original rating)