Certification
- Australia:MA15+
- Canada:14A (Manitoba/Nova Scotia/Ontario, some seasons, DVD rating)
- Canada:PG (Nova Scotia, seasons 1 and 2, DVD rating)
- Canada:PG (Ontario, seasons 1 and 3, DVD rating)
- Germany:16 (self-applied)
- Netherlands:9
- Philippines:16+ (self-applied)
- United States:TV-14