The IMDb community has it wrong on this one.

Rating: Null/10 (17 April 2012)

With an average score of 8.2 stars, this title fits in snugly to the top 250 films of all time. To me, this is simply an absolute joke.
To begin with, the main character is named 'Hiccup'. Even the character himself acknowledges how awful a choice this is. It adds nothing. The voice acting for 'Hiccup' is performed by a disgustingly sarcastic man with a head cold. It really is painful to listen to at times. Amusingly the majority of the other Vikings appear to be Scottish.
As for the story itself, you could literally take out the dragons and it would be any other Dreamworks film ever. While some may enjoy this 'style' it just gets incredibly tedious and predictable, allowing the audience to basically write the film 10 minutes before it happens. For the love of god would it kill them to try to make anything at all original. Attempts to think outside the box on this occasion appear to have landed them inside another box, which itself was inside a well defined crate.
Also, the dragons are basically cats.
For me to enjoy this film I would either have to be 10 years younger or 10 IQ points stupider. 3/10