Certification
- Canada:13+ (film #236722, Quebec)
- Canada:18+ (2007, DVD rating)
- Italy:T (2006, DVD rating)
- Malaysia:U
- United States:Not Rated (2021, Suggested 18+, AnimEigo Blu-Ray rating)
- United States:TV-14 (2009, DVD rating)
- United States:TV-MA (2007, DVD rating)
- United States:Not Rated (2004, Suggested 15+, DVD rating)