Enjoyed this as much as my 5 and 3 year old. Based loosly on a book called "Hiccup the Seasick Viking." This was a good companion piece. Leave it to an animaton studio to deal with themes that other mainstream genres can't deal with...like demonization of one's enemies and conflict over resources. It also dealt well with another running theme in Dreamworks pictures (i.e. Shrek)...individualism and thinking for/being yourself in face of peer and family pressure. The violence is modest and the word "kill" is used a lot. But these are concepts we shouldn't be suprised our kids already know about. Looking forward to the Bluray!